diff --git a/src/lib/ecore/efl_loop.eo b/src/lib/ecore/efl_loop.eo
index 283d583e00..25ce3fec88 100644
--- a/src/lib/ecore/efl_loop.eo
+++ b/src/lib/ecore/efl_loop.eo
@@ -10,7 +10,6 @@ class Efl.Loop (Eo.Base)
    great responsiveness without the need for threads (or any other concurrency), but
    provide them if you need to.
    ]]
-   legacy_prefix: null;
    methods {
       iterate {
          [[Runs a single iteration of the main loop to process everything on the
diff --git a/src/lib/ecore/efl_loop_fd.eo b/src/lib/ecore/efl_loop_fd.eo
index 1be9f0a1e6..ec1003d666 100644
--- a/src/lib/ecore/efl_loop_fd.eo
+++ b/src/lib/ecore/efl_loop_fd.eo
@@ -9,7 +9,6 @@ class Efl.Loop.Fd (Efl.Loop_User)
      The object will trigger relevant event depending
      on what is happening.]]
 
-   legacy_prefix: null;
    methods {
       @property fd {
          [[Define which file descriptor to watch. If it is a file, use file_fd variant.]]
diff --git a/src/lib/ecore/efl_loop_user.eo b/src/lib/ecore/efl_loop_user.eo
index a4068a7c40..4a5aa03d48 100644
--- a/src/lib/ecore/efl_loop_user.eo
+++ b/src/lib/ecore/efl_loop_user.eo
@@ -3,7 +3,6 @@ class Efl.Loop_User (Eo.Base)
    [[An Efl.Loop_User is a class that require one of the parent to provide
      an Efl.Loop interface when doing provider_find. It will enforce this by
      only allowing parent that provide such interface or NULL.]]
-   legacy_prefix: null;
    methods {
       loop_get {
          return: Efl.Loop *;
diff --git a/src/lib/ecore_audio/ecore_audio.eo b/src/lib/ecore_audio/ecore_audio.eo
index bafea5c4ca..66728b8be4 100644
--- a/src/lib/ecore_audio/ecore_audio.eo
+++ b/src/lib/ecore_audio/ecore_audio.eo
@@ -15,7 +15,6 @@ class Ecore.Audio (Eo.Base)
 {
    [[Convenience audio class.]]
 
-   legacy_prefix: null;
    eo_prefix: ecore_audio_obj;
    data: Ecore_Audio_Object;
    methods {
diff --git a/src/lib/ecore_audio/ecore_audio_in.eo b/src/lib/ecore_audio/ecore_audio_in.eo
index 6ab3c8fec7..3ef596b6ff 100644
--- a/src/lib/ecore_audio/ecore_audio_in.eo
+++ b/src/lib/ecore_audio/ecore_audio_in.eo
@@ -1,7 +1,6 @@
 class Ecore.Audio.In (Ecore.Audio)
 {
    [[Ecore Audio input object.]]
-   legacy_prefix: null;
    eo_prefix: ecore_audio_obj_in;
    data: Ecore_Audio_Input;
    methods {
diff --git a/src/lib/ecore_audio/ecore_audio_out.eo b/src/lib/ecore_audio/ecore_audio_out.eo
index f62df38795..588d1a3cb9 100644
--- a/src/lib/ecore_audio/ecore_audio_out.eo
+++ b/src/lib/ecore_audio/ecore_audio_out.eo
@@ -2,7 +2,6 @@ class Ecore.Audio.Out (Ecore.Audio)
 {
    [[Ecore Audio output object.]]
 
-   legacy_prefix: null;
    eo_prefix: ecore_audio_obj_out;
    data: Ecore_Audio_Output;
    methods {
diff --git a/src/lib/ecore_con/ecore_con_eet_base.eo b/src/lib/ecore_con/ecore_con_eet_base.eo
index d78c99fa4b..6825f8445c 100644
--- a/src/lib/ecore_con/ecore_con_eet_base.eo
+++ b/src/lib/ecore_con/ecore_con_eet_base.eo
@@ -11,7 +11,6 @@ class Ecore.Con.Eet.Base (Eo.Base) {
    
    This class provides Eet data serialization features to Ecore Connection objects.]]
 
-   legacy_prefix: null;
    methods {
       @property server {
          [[The server object to which we send and receive.]]
diff --git a/src/lib/ecore_con/ecore_con_eet_client_obj.eo b/src/lib/ecore_con/ecore_con_eet_client_obj.eo
index 9efad6c4c4..85167369da 100644
--- a/src/lib/ecore_con/ecore_con_eet_client_obj.eo
+++ b/src/lib/ecore_con/ecore_con_eet_client_obj.eo
@@ -1,7 +1,6 @@
 class Ecore.Con.Eet.Client.Obj (Ecore.Con.Eet.Base) {
    [[Ecore Connection Eet Client class.]]
 
-   legacy_prefix: null;
    eo_prefix: ecore_con_eet_client_obj;
    implements {
         Eo.Base.constructor;
diff --git a/src/lib/ecore_con/ecore_con_eet_server_obj.eo b/src/lib/ecore_con/ecore_con_eet_server_obj.eo
index a943aa1129..175f0ba57e 100644
--- a/src/lib/ecore_con/ecore_con_eet_server_obj.eo
+++ b/src/lib/ecore_con/ecore_con_eet_server_obj.eo
@@ -1,7 +1,6 @@
 class Ecore.Con.Eet.Server.Obj (Ecore.Con.Eet.Base) {
    [[Ecore Connection Eet Server class.]]
 
-   legacy_prefix: null;
    eo_prefix: ecore_con_eet_server_obj;
    implements {
         Eo.Base.constructor;
diff --git a/src/lib/ecore_con/efl_network_url.eo b/src/lib/ecore_con/efl_network_url.eo
index 8148e8b2b5..9dd8065e7a 100644
--- a/src/lib/ecore_con/efl_network_url.eo
+++ b/src/lib/ecore_con/efl_network_url.eo
@@ -1,6 +1,5 @@
 class Efl.Network.Url (Eo.Base) {
    [[Uniform Resource Locator (URL) base class]]
-   legacy_prefix: null;
    eo_prefix: efl_network_url;
    methods {
       @property url {
diff --git a/src/lib/ector/cairo/ector_cairo_software_surface.eo b/src/lib/ector/cairo/ector_cairo_software_surface.eo
index 7ddcb0aa26..2aaf674ca2 100644
--- a/src/lib/ector/cairo/ector_cairo_software_surface.eo
+++ b/src/lib/ector/cairo/ector_cairo_software_surface.eo
@@ -5,7 +5,6 @@ class Ector.Cairo.Software.Surface (Ector.Cairo.Surface, Ector.Software.Buffer.B
    Used to render ector content into a cairo software backend.
    ]]
    eo_prefix: ector_cairo_software_surface;
-   legacy_prefix: null;
    methods {}
    implements {
       Ector.Buffer.pixels_set;
diff --git a/src/lib/ector/cairo/ector_cairo_surface.eo b/src/lib/ector/cairo/ector_cairo_surface.eo
index 452db34b92..ad1a092396 100644
--- a/src/lib/ector/cairo/ector_cairo_surface.eo
+++ b/src/lib/ector/cairo/ector_cairo_surface.eo
@@ -7,7 +7,6 @@ class Ector.Cairo.Surface (Eo.Base, Ector.Surface)
    Used to render ector content into a cairo backend.
    ]]
    eo_prefix: ector_cairo_surface;
-   legacy_prefix: null;
    methods {
       @property context {
          [[Cairo context]]
diff --git a/src/lib/ector/cairo/ector_renderer_cairo.eo b/src/lib/ector/cairo/ector_renderer_cairo.eo
index fe90d47056..f9e094fe9c 100644
--- a/src/lib/ector/cairo/ector_renderer_cairo.eo
+++ b/src/lib/ector/cairo/ector_renderer_cairo.eo
@@ -1,6 +1,5 @@
 abstract Ector.Renderer.Cairo (Ector.Renderer)
 {
-   legacy_prefix: null;
    methods {
       fill @virtual_pure {
          return: bool;
diff --git a/src/lib/ector/cairo/ector_renderer_cairo_gradient_linear.eo b/src/lib/ector/cairo/ector_renderer_cairo_gradient_linear.eo
index 0a00aa369f..0f3fc1d302 100644
--- a/src/lib/ector/cairo/ector_renderer_cairo_gradient_linear.eo
+++ b/src/lib/ector/cairo/ector_renderer_cairo_gradient_linear.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.Cairo.Gradient.Linear (Ector.Renderer.Cairo, Ector.Renderer.Gradient, Ector.Renderer.Gradient.Linear)
 {
    eo_prefix: ector_renderer_cairo_gradient_linear;
-   legacy_prefix: null;
    implements {
       Ector.Renderer.prepare;
       Ector.Renderer.draw;
diff --git a/src/lib/ector/cairo/ector_renderer_cairo_gradient_radial.eo b/src/lib/ector/cairo/ector_renderer_cairo_gradient_radial.eo
index 83f8e4a705..0df3bc1e81 100644
--- a/src/lib/ector/cairo/ector_renderer_cairo_gradient_radial.eo
+++ b/src/lib/ector/cairo/ector_renderer_cairo_gradient_radial.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.Cairo.Gradient.Radial (Ector.Renderer.Cairo, Ector.Renderer.Gradient, Ector.Renderer.Gradient.Radial)
 {
    eo_prefix: ector_renderer_cairo_gradient_radial;
-   legacy_prefix: null;
    implements {
       Ector.Renderer.prepare;
       Ector.Renderer.draw;
diff --git a/src/lib/ector/cairo/ector_renderer_cairo_shape.eo b/src/lib/ector/cairo/ector_renderer_cairo_shape.eo
index 9d19fbf557..4191ff0feb 100644
--- a/src/lib/ector/cairo/ector_renderer_cairo_shape.eo
+++ b/src/lib/ector/cairo/ector_renderer_cairo_shape.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.Cairo.Shape (Ector.Renderer.Cairo, Ector.Renderer.Shape)
 {
    eo_prefix: ector_renderer_cairo_shape;
-   legacy_prefix: null;
    implements {
       Ector.Renderer.prepare;
       Ector.Renderer.draw;
diff --git a/src/lib/ector/ector_buffer.eo b/src/lib/ector/ector_buffer.eo
index 1537bd2697..14bfa88e98 100644
--- a/src/lib/ector/ector_buffer.eo
+++ b/src/lib/ector/ector_buffer.eo
@@ -27,7 +27,6 @@ mixin Ector.Buffer
      @since 1.17
    ]]
    eo_prefix: ector_buffer;
-   legacy_prefix: null;
    methods {
       @property size {
          [[The (rectangular) size of the pixel buffer.]]
diff --git a/src/lib/ector/ector_renderer.eo b/src/lib/ector/ector_renderer.eo
index ff0c84c10b..3bd58023e4 100644
--- a/src/lib/ector/ector_renderer.eo
+++ b/src/lib/ector/ector_renderer.eo
@@ -14,7 +14,6 @@ abstract Ector.Renderer (Eo.Base)
    [[Ector renderer abstract interface]]
 
    eo_prefix: ector_renderer;
-   legacy_prefix: null;
    methods {
       @property surface {
          [[Surface associated to this renderer]]
diff --git a/src/lib/ector/ector_renderer_buffer.eo b/src/lib/ector/ector_renderer_buffer.eo
index d11d42163d..da907b8193 100644
--- a/src/lib/ector/ector_renderer_buffer.eo
+++ b/src/lib/ector/ector_renderer_buffer.eo
@@ -2,7 +2,6 @@ mixin Ector.Renderer.Buffer (Ector.Renderer, Efl.Gfx.Fill)
 {
    [[Ector buffers have a default fill set to repeat]]
    eo_prefix: ector_renderer_buffer;
-   legacy_prefix: null;
    methods {
       @property buffer {
 	 set { [[Sets the source buffer for this renderer, adds a ref]] }
diff --git a/src/lib/ector/ector_renderer_gradient.eo b/src/lib/ector/ector_renderer_gradient.eo
index a8688203c2..b6cc432a85 100644
--- a/src/lib/ector/ector_renderer_gradient.eo
+++ b/src/lib/ector/ector_renderer_gradient.eo
@@ -1,7 +1,6 @@
 mixin Ector.Renderer.Gradient (Efl.Gfx.Gradient)
 {
    eo_prefix: ector_renderer_gradient;
-   legacy_prefix: null;
    implements {
       Efl.Gfx.Gradient.stop.set;
       Efl.Gfx.Gradient.stop.get;
diff --git a/src/lib/ector/ector_renderer_gradient_linear.eo b/src/lib/ector/ector_renderer_gradient_linear.eo
index a822bab25b..4277d29770 100644
--- a/src/lib/ector/ector_renderer_gradient_linear.eo
+++ b/src/lib/ector/ector_renderer_gradient_linear.eo
@@ -1,7 +1,6 @@
 mixin Ector.Renderer.Gradient.Linear (Efl.Gfx.Gradient.Linear)
 {
    eo_prefix: ector_renderer_gradient_linear;
-   legacy_prefix: null;
    implements {
       Efl.Gfx.Gradient.Linear.start.set;
       Efl.Gfx.Gradient.Linear.start.get;
diff --git a/src/lib/ector/ector_renderer_gradient_radial.eo b/src/lib/ector/ector_renderer_gradient_radial.eo
index 43622a6f4a..acbc42de3f 100644
--- a/src/lib/ector/ector_renderer_gradient_radial.eo
+++ b/src/lib/ector/ector_renderer_gradient_radial.eo
@@ -1,7 +1,6 @@
 mixin Ector.Renderer.Gradient.Radial (Efl.Gfx.Gradient.Radial)
 {
    eo_prefix: ector_renderer_gradient_radial;
-   legacy_prefix: null;
    implements {
       Efl.Gfx.Gradient.Radial.center.set;
       Efl.Gfx.Gradient.Radial.center.get;
diff --git a/src/lib/ector/ector_renderer_shape.eo b/src/lib/ector/ector_renderer_shape.eo
index 62f6960821..3ad23dafd7 100644
--- a/src/lib/ector/ector_renderer_shape.eo
+++ b/src/lib/ector/ector_renderer_shape.eo
@@ -3,7 +3,6 @@ import ector_renderer;
 mixin Ector.Renderer.Shape (Efl.Gfx.Shape)
 {
    eo_prefix: ector_renderer_shape;
-   legacy_prefix: null;
    methods {
       @property fill {
          set {
diff --git a/src/lib/ector/ector_surface.eo b/src/lib/ector/ector_surface.eo
index 9243b170c7..9f517da78b 100644
--- a/src/lib/ector/ector_surface.eo
+++ b/src/lib/ector/ector_surface.eo
@@ -3,7 +3,6 @@ mixin Ector.Surface (Ector.Buffer)
    [[Surface interface for Ector]]
 
    eo_prefix: ector_surface;
-   legacy_prefix: null;
    data: null;
    methods {
       @property reference_point {
diff --git a/src/lib/ector/gl/ector_gl_buffer.eo b/src/lib/ector/gl/ector_gl_buffer.eo
index eb1bb046e4..7e8c3c8e7b 100644
--- a/src/lib/ector/gl/ector_gl_buffer.eo
+++ b/src/lib/ector/gl/ector_gl_buffer.eo
@@ -1,5 +1,4 @@
 class Ector.GL.Buffer (Eo.Base, Ector.GL.Buffer.Base)
 {
-   legacy_prefix: null;
    data: null;
 }
diff --git a/src/lib/ector/gl/ector_gl_buffer_base.eo b/src/lib/ector/gl/ector_gl_buffer_base.eo
index 32882a4404..df5376365e 100644
--- a/src/lib/ector/gl/ector_gl_buffer_base.eo
+++ b/src/lib/ector/gl/ector_gl_buffer_base.eo
@@ -1,6 +1,5 @@
 mixin Ector.GL.Buffer.Base (Ector.Buffer)
 {
-   legacy_prefix: null;
    methods {
       @property texture {
          get {}
diff --git a/src/lib/ector/gl/ector_gl_surface.eo b/src/lib/ector/gl/ector_gl_surface.eo
index 770f550e31..b0a7749694 100644
--- a/src/lib/ector/gl/ector_gl_surface.eo
+++ b/src/lib/ector/gl/ector_gl_surface.eo
@@ -3,7 +3,6 @@ import ector_types;
 class Ector.GL.Surface (Ector.GL.Buffer, Ector.Surface)
 {
    eo_prefix: ector_gl_surface;
-   legacy_prefix: null;
    methods {
       shader_get {
          return: uint;
diff --git a/src/lib/ector/gl/ector_renderer_gl.eo b/src/lib/ector/gl/ector_renderer_gl.eo
index 5ee47d8997..c6e0915d51 100644
--- a/src/lib/ector/gl/ector_renderer_gl.eo
+++ b/src/lib/ector/gl/ector_renderer_gl.eo
@@ -2,7 +2,6 @@ import ector_types;
 
 abstract Ector.Renderer.GL (Ector.Renderer)
 {
-   legacy_prefix: null;
    methods {
       fill @virtual_pure {
          return: bool;
diff --git a/src/lib/ector/gl/ector_renderer_gl_gradient_linear.eo b/src/lib/ector/gl/ector_renderer_gl_gradient_linear.eo
index 9a613cd746..67c007849f 100644
--- a/src/lib/ector/gl/ector_renderer_gl_gradient_linear.eo
+++ b/src/lib/ector/gl/ector_renderer_gl_gradient_linear.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.GL.Gradient.Linear (Ector.Renderer.GL, Ector.Renderer.Gradient, Ector.Renderer.Gradient.Linear)
 {
    eo_prefix: ector_renderer_gl_gradient_linear;
-   legacy_prefix: null;
    implements {
       Ector.Renderer.prepare;
       Ector.Renderer.draw;
diff --git a/src/lib/ector/gl/ector_renderer_gl_gradient_radial.eo b/src/lib/ector/gl/ector_renderer_gl_gradient_radial.eo
index 739e4d1004..b0446ce720 100644
--- a/src/lib/ector/gl/ector_renderer_gl_gradient_radial.eo
+++ b/src/lib/ector/gl/ector_renderer_gl_gradient_radial.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.GL.Gradient.Radial (Ector.Renderer.GL, Ector.Renderer.Gradient, Ector.Renderer.Gradient.Radial)
 {
    eo_prefix: ector_renderer_gl_gradient_radial;
-   legacy_prefix: null;
    implements {
       Ector.Renderer.prepare;
       Ector.Renderer.draw;
diff --git a/src/lib/ector/gl/ector_renderer_gl_shape.eo b/src/lib/ector/gl/ector_renderer_gl_shape.eo
index 1c93022c3e..5282898d04 100644
--- a/src/lib/ector/gl/ector_renderer_gl_shape.eo
+++ b/src/lib/ector/gl/ector_renderer_gl_shape.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.GL.Shape (Ector.Renderer.GL, Ector.Renderer.Shape)
 {
    eo_prefix: ector_renderer_gl_shape;
-   legacy_prefix: null;
    implements {
       Ector.Renderer.prepare;
       Ector.Renderer.draw;
diff --git a/src/lib/ector/software/ector_renderer_software.eo b/src/lib/ector/software/ector_renderer_software.eo
index a875e3df21..a9dd313b69 100644
--- a/src/lib/ector/software/ector_renderer_software.eo
+++ b/src/lib/ector/software/ector_renderer_software.eo
@@ -1,6 +1,5 @@
 class Ector.Renderer.Software (Ector.Renderer)
 {
-   legacy_prefix: null;
    data: null;
    methods {
       fill @virtual_pure {
diff --git a/src/lib/ector/software/ector_renderer_software_buffer.eo b/src/lib/ector/software/ector_renderer_software_buffer.eo
index 3595a3cb45..871a8a66c5 100644
--- a/src/lib/ector/software/ector_renderer_software_buffer.eo
+++ b/src/lib/ector/software/ector_renderer_software_buffer.eo
@@ -1,6 +1,5 @@
 class Ector.Renderer.Software.Buffer (Ector.Renderer.Software, Ector.Renderer.Buffer)
 {
-   legacy_prefix: null;
    methods {
       @property buffer {
          set {}
diff --git a/src/lib/ector/software/ector_renderer_software_gradient_linear.eo b/src/lib/ector/software/ector_renderer_software_gradient_linear.eo
index 50bd92e71f..0d63b98b82 100644
--- a/src/lib/ector/software/ector_renderer_software_gradient_linear.eo
+++ b/src/lib/ector/software/ector_renderer_software_gradient_linear.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.Software.Gradient.Linear (Ector.Renderer.Software, Ector.Renderer.Gradient, Ector.Renderer.Gradient.Linear)
 {
    eo_prefix: ector_renderer_software_gradient_linear;
-   legacy_prefix: null;
    data: Ector_Renderer_Software_Gradient_Data;
    implements {
       Ector.Renderer.prepare;
diff --git a/src/lib/ector/software/ector_renderer_software_gradient_radial.eo b/src/lib/ector/software/ector_renderer_software_gradient_radial.eo
index 321ec308f3..c50b754109 100644
--- a/src/lib/ector/software/ector_renderer_software_gradient_radial.eo
+++ b/src/lib/ector/software/ector_renderer_software_gradient_radial.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.Software.Gradient.Radial (Ector.Renderer.Software, Ector.Renderer.Gradient, Ector.Renderer.Gradient.Radial)
 {
    eo_prefix: ector_renderer_software_gradient_radial;
-   legacy_prefix: null;
    data: Ector_Renderer_Software_Gradient_Data;
    implements {
       Ector.Renderer.prepare;
diff --git a/src/lib/ector/software/ector_renderer_software_shape.eo b/src/lib/ector/software/ector_renderer_software_shape.eo
index bb0374b07b..b8d91fe610 100644
--- a/src/lib/ector/software/ector_renderer_software_shape.eo
+++ b/src/lib/ector/software/ector_renderer_software_shape.eo
@@ -1,7 +1,6 @@
 class Ector.Renderer.Software.Shape (Ector.Renderer.Software, Ector.Renderer.Shape)
 {
    eo_prefix: ector_renderer_software_shape;
-   legacy_prefix: null;
    implements {
       Ector.Renderer.prepare;
       Ector.Renderer.draw;
diff --git a/src/lib/ector/software/ector_software_buffer.eo b/src/lib/ector/software/ector_software_buffer.eo
index 1190dce81a..cfbe1f76d0 100644
--- a/src/lib/ector/software/ector_software_buffer.eo
+++ b/src/lib/ector/software/ector_software_buffer.eo
@@ -1,6 +1,5 @@
 class Ector.Software.Buffer (Eo.Base, Ector.Software.Buffer.Base)
 {
-   legacy_prefix: null;
    data: null;
    implements {
       Eo.Base.constructor;
diff --git a/src/lib/ector/software/ector_software_buffer_base.eo b/src/lib/ector/software/ector_software_buffer_base.eo
index aa38738e84..b2e9bec7f4 100644
--- a/src/lib/ector/software/ector_software_buffer_base.eo
+++ b/src/lib/ector/software/ector_software_buffer_base.eo
@@ -2,7 +2,6 @@ mixin Ector.Software.Buffer.Base (Ector.Buffer)
 {
    [[A buffer in Ector Software is a readable & optionally writable image]]
    eo_prefix: ector_software_buffer;
-   legacy_prefix: null;
    methods {
       pixels_clear @protected {
         [[Clear internal pixel buffer]]
diff --git a/src/lib/ector/software/ector_software_surface.eo b/src/lib/ector/software/ector_software_surface.eo
index c01adca6bd..3aa560d46e 100644
--- a/src/lib/ector/software/ector_software_surface.eo
+++ b/src/lib/ector/software/ector_software_surface.eo
@@ -1,7 +1,6 @@
 class Ector.Software.Surface (Ector.Software.Buffer, Ector.Surface)
 {
    eo_prefix: ector_software_surface;
-   legacy_prefix: null;
    methods {}
    implements {
       Ector.Surface.renderer_factory_new;
diff --git a/src/lib/edje/efl_canvas_layout_internal_box.eo b/src/lib/edje/efl_canvas_layout_internal_box.eo
index c2998a3322..48284b901a 100644
--- a/src/lib/edje/efl_canvas_layout_internal_box.eo
+++ b/src/lib/edje/efl_canvas_layout_internal_box.eo
@@ -5,7 +5,6 @@ class Efl.Canvas.Layout_Internal.Box (Eo.Base, Efl.Pack.Linear)
      Can not be deleted, this is only a representation of an internal object
      of an EFL layout.
    ]]
-   legacy_prefix: null;
    data: Edje_Box_Data;
    methods {
       @property real_part @protected {
diff --git a/src/lib/edje/efl_canvas_layout_internal_table.eo b/src/lib/edje/efl_canvas_layout_internal_table.eo
index 129963c0f6..ddebbc9ce6 100644
--- a/src/lib/edje/efl_canvas_layout_internal_table.eo
+++ b/src/lib/edje/efl_canvas_layout_internal_table.eo
@@ -5,7 +5,6 @@ class Efl.Canvas.Layout_Internal.Table (Eo.Base, Efl.Pack.Grid)
      Can not be deleted, this is only a representation of an internal object
      of an EFL layout.
    ]]
-   legacy_prefix: null;
    data: Edje_Table_Data;
    methods {
       @property real_part @protected {
diff --git a/src/lib/efl/interfaces/efl_animator.eo b/src/lib/efl/interfaces/efl_animator.eo
index b9a32e996a..2fcb4a703b 100644
--- a/src/lib/efl/interfaces/efl_animator.eo
+++ b/src/lib/efl/interfaces/efl_animator.eo
@@ -5,7 +5,6 @@ struct Efl.Event.Animator_Tick {
 }
 
 interface Efl.Animator {
-   legacy_prefix: null;
    eo_prefix: efl_animator;
    events {
       animator,tick: Efl.Event.Animator_Tick; [[Animator tick synchronized with screen vsync if possible.]]
diff --git a/src/lib/efl/interfaces/efl_container.eo b/src/lib/efl/interfaces/efl_container.eo
index 9663ebe383..8e46e1d424 100644
--- a/src/lib/efl/interfaces/efl_container.eo
+++ b/src/lib/efl/interfaces/efl_container.eo
@@ -1,7 +1,6 @@
 interface Efl.Container (Efl.Gfx)
 {
    [[API common to all UI container objects.]]
-   legacy_prefix: null;
    eo_prefix: efl_content;
    methods {
       @property content {
diff --git a/src/lib/efl/interfaces/efl_control.eo b/src/lib/efl/interfaces/efl_control.eo
index ec587f6b1d..148f21d4f2 100644
--- a/src/lib/efl/interfaces/efl_control.eo
+++ b/src/lib/efl/interfaces/efl_control.eo
@@ -1,7 +1,6 @@
 /* FIXME: Rename */
 
 interface Efl.Control {
-   legacy_prefix: null;
    methods {
         @property priority {
              [[Control the priority of the object.]]
diff --git a/src/lib/efl/interfaces/efl_file.eo b/src/lib/efl/interfaces/efl_file.eo
index f863dcb828..852bf294c8 100644
--- a/src/lib/efl/interfaces/efl_file.eo
+++ b/src/lib/efl/interfaces/efl_file.eo
@@ -1,7 +1,6 @@
 import eina_types;
 
 interface Efl.File {
-   legacy_prefix: null;
    methods {
       @property mmap {
          set {
diff --git a/src/lib/efl/interfaces/efl_flipable.eo b/src/lib/efl/interfaces/efl_flipable.eo
index bc6629b849..5910851eb1 100644
--- a/src/lib/efl/interfaces/efl_flipable.eo
+++ b/src/lib/efl/interfaces/efl_flipable.eo
@@ -11,7 +11,6 @@ enum Efl.Flip
 
 interface Efl.Flipable
 {
-   legacy_prefix: null;
    eo_prefix: efl_flip;
    methods {
        @property flip {
diff --git a/src/lib/efl/interfaces/efl_gfx.eo b/src/lib/efl/interfaces/efl_gfx.eo
index 9c47e7bc2d..bfa1491fa9 100644
--- a/src/lib/efl/interfaces/efl_gfx.eo
+++ b/src/lib/efl/interfaces/efl_gfx.eo
@@ -1,7 +1,6 @@
 import efl_gfx_types;
 
 interface Efl.Gfx {
-   legacy_prefix: null;
    eo_prefix: efl_gfx;
    methods {
       @property position {
diff --git a/src/lib/efl/interfaces/efl_gfx_buffer.eo b/src/lib/efl/interfaces/efl_gfx_buffer.eo
index 08a92f9376..c1afd4ec58 100644
--- a/src/lib/efl/interfaces/efl_gfx_buffer.eo
+++ b/src/lib/efl/interfaces/efl_gfx_buffer.eo
@@ -11,7 +11,6 @@ enum Efl.Gfx.Buffer.Access_Mode {
 interface Efl.Gfx.Buffer ()
 {
    [[Common APIs for all objects representing images and 2D pixel buffers.]]
-   legacy_prefix: null;
 
    methods {
       @property buffer_size {
diff --git a/src/lib/efl/interfaces/efl_gfx_fill.eo b/src/lib/efl/interfaces/efl_gfx_fill.eo
index 5ee05e0630..8260a7b60b 100644
--- a/src/lib/efl/interfaces/efl_gfx_fill.eo
+++ b/src/lib/efl/interfaces/efl_gfx_fill.eo
@@ -1,5 +1,4 @@
 interface Efl.Gfx.Fill {
-   legacy_prefix: null;
    methods {
       @property fill_auto {
          [[Binds the object's @.fill property to its actual geometry.
diff --git a/src/lib/efl/interfaces/efl_gfx_filter.eo b/src/lib/efl/interfaces/efl_gfx_filter.eo
index b59d857593..ce6e354a98 100644
--- a/src/lib/efl/interfaces/efl_gfx_filter.eo
+++ b/src/lib/efl/interfaces/efl_gfx_filter.eo
@@ -11,7 +11,6 @@ interface Efl.Gfx.Filter
      @since 1.18
    ]]
    eo_prefix: efl_gfx;
-   legacy_prefix: null;
    methods {
       @property filter_program {
          set {
diff --git a/src/lib/efl/interfaces/efl_gfx_gradient.eo b/src/lib/efl/interfaces/efl_gfx_gradient.eo
index ce73641d5e..724b09ded2 100644
--- a/src/lib/efl/interfaces/efl_gfx_gradient.eo
+++ b/src/lib/efl/interfaces/efl_gfx_gradient.eo
@@ -3,7 +3,6 @@ import efl_gfx_types;
 interface Efl.Gfx.Gradient
 {
    eo_prefix: efl_gfx_gradient;
-   legacy_prefix: null;
    methods {
       @property stop {
          set {
diff --git a/src/lib/efl/interfaces/efl_gfx_gradient_linear.eo b/src/lib/efl/interfaces/efl_gfx_gradient_linear.eo
index 59a17fa053..8dd4f75a27 100644
--- a/src/lib/efl/interfaces/efl_gfx_gradient_linear.eo
+++ b/src/lib/efl/interfaces/efl_gfx_gradient_linear.eo
@@ -1,6 +1,5 @@
 interface Efl.Gfx.Gradient.Linear (Efl.Gfx.Gradient)
 {
-   legacy_prefix: null;
    methods {
       @property start {
          set {
diff --git a/src/lib/efl/interfaces/efl_gfx_gradient_radial.eo b/src/lib/efl/interfaces/efl_gfx_gradient_radial.eo
index 5aaa214e3d..bcae3af8df 100644
--- a/src/lib/efl/interfaces/efl_gfx_gradient_radial.eo
+++ b/src/lib/efl/interfaces/efl_gfx_gradient_radial.eo
@@ -1,6 +1,5 @@
 interface Efl.Gfx.Gradient.Radial (Efl.Gfx.Gradient)
 {
-   legacy_prefix: null;
    methods {
       @property center {
          set {
diff --git a/src/lib/efl/interfaces/efl_gfx_shape.eo b/src/lib/efl/interfaces/efl_gfx_shape.eo
index 6395b98499..ad80097c1a 100644
--- a/src/lib/efl/interfaces/efl_gfx_shape.eo
+++ b/src/lib/efl/interfaces/efl_gfx_shape.eo
@@ -3,7 +3,6 @@ import efl_gfx_types;
 
 mixin Efl.Gfx.Shape
 {
-   legacy_prefix: null;
    methods {
       @property stroke_scale {
          set {
diff --git a/src/lib/efl/interfaces/efl_gfx_stack.eo b/src/lib/efl/interfaces/efl_gfx_stack.eo
index 7ff26469c1..6a6875a64e 100644
--- a/src/lib/efl/interfaces/efl_gfx_stack.eo
+++ b/src/lib/efl/interfaces/efl_gfx_stack.eo
@@ -1,5 +1,4 @@
 interface Efl.Gfx.Stack {
-   legacy_prefix: null;
    methods {
       @property layer {
          set {
diff --git a/src/lib/efl/interfaces/efl_gfx_view.eo b/src/lib/efl/interfaces/efl_gfx_view.eo
index 47a1d18b33..c172faecfe 100644
--- a/src/lib/efl/interfaces/efl_gfx_view.eo
+++ b/src/lib/efl/interfaces/efl_gfx_view.eo
@@ -1,5 +1,4 @@
 interface Efl.Gfx.View {
-   legacy_prefix: null;
    eo_prefix: efl_gfx;
    methods {
       @property view_size {
diff --git a/src/lib/efl/interfaces/efl_image.eo b/src/lib/efl/interfaces/efl_image.eo
index 7e65faece3..4e57fd7210 100644
--- a/src/lib/efl/interfaces/efl_image.eo
+++ b/src/lib/efl/interfaces/efl_image.eo
@@ -20,7 +20,6 @@ enum Efl.Image.Scale_Hint
 interface Efl.Image ()
 {
    [[Common APIs for all 2D images that can be rendered on the canvas.]]
-   legacy_prefix: null;
 
    methods {
       @property smooth_scale {
diff --git a/src/lib/efl/interfaces/efl_image_animated.eo b/src/lib/efl/interfaces/efl_image_animated.eo
index 5404207f1e..18e7ad1713 100644
--- a/src/lib/efl/interfaces/efl_image_animated.eo
+++ b/src/lib/efl/interfaces/efl_image_animated.eo
@@ -11,7 +11,6 @@ enum Efl.Image.Animated.Loop_Hint {
 
 interface Efl.Image.Animated ()
 {
-   legacy_prefix: null;
    eo_prefix: efl_image;
 
    methods {
diff --git a/src/lib/efl/interfaces/efl_image_load.eo b/src/lib/efl/interfaces/efl_image_load.eo
index 6b9c71cb56..38ef2976ad 100644
--- a/src/lib/efl/interfaces/efl_image_load.eo
+++ b/src/lib/efl/interfaces/efl_image_load.eo
@@ -25,7 +25,6 @@ enum Efl.Image.Load.State
 interface Efl.Image.Load ()
 {
    [[Common APIs for all loadable 2D images.]]
-   legacy_prefix: null;
 
    methods {
       load_async_start {
diff --git a/src/lib/efl/interfaces/efl_model.eo b/src/lib/efl/interfaces/efl_model.eo
index a920e15eec..00ce068e28 100644
--- a/src/lib/efl/interfaces/efl_model.eo
+++ b/src/lib/efl/interfaces/efl_model.eo
@@ -5,7 +5,6 @@ struct Efl.Model.Property_Event {
 
 interface Efl.Model ()
 {
-   legacy_prefix: null;
    eo_prefix: efl_model;
       methods {
          @property properties {
diff --git a/src/lib/efl/interfaces/efl_orientation.eo b/src/lib/efl/interfaces/efl_orientation.eo
index 6b0db00cc3..d614fbc787 100644
--- a/src/lib/efl/interfaces/efl_orientation.eo
+++ b/src/lib/efl/interfaces/efl_orientation.eo
@@ -16,7 +16,6 @@ enum Efl.Orient
 
 interface Efl.Orientation
 {
-   legacy_prefix: null;
    methods {
        @property orientation{
          [[Control the orientation of a given widget
diff --git a/src/lib/efl/interfaces/efl_pack.eo b/src/lib/efl/interfaces/efl_pack.eo
index 95c60feaed..201bae0c33 100644
--- a/src/lib/efl/interfaces/efl_pack.eo
+++ b/src/lib/efl/interfaces/efl_pack.eo
@@ -3,7 +3,6 @@ import eina_types;
 interface Efl.Pack (Efl.Container)
 {
    [[API common to all UI container objects.]]
-   legacy_prefix: null;
    methods
    {
       pack_clear {
diff --git a/src/lib/efl/interfaces/efl_pack_grid.eo b/src/lib/efl/interfaces/efl_pack_grid.eo
index 28f0bfe200..a4c5e655d9 100644
--- a/src/lib/efl/interfaces/efl_pack_grid.eo
+++ b/src/lib/efl/interfaces/efl_pack_grid.eo
@@ -3,7 +3,6 @@ import efl_gfx_types;
 interface Efl.Pack.Grid (Efl.Pack.Linear)
 {
    [[2D containers aligned on a grid with rows and columns]]
-   legacy_prefix: null;
    eo_prefix: efl_pack;
    methods {
       pack_grid {
diff --git a/src/lib/efl/interfaces/efl_pack_layout.eo b/src/lib/efl/interfaces/efl_pack_layout.eo
index 8bf3aeeaa7..32dbae25e1 100644
--- a/src/lib/efl/interfaces/efl_pack_layout.eo
+++ b/src/lib/efl/interfaces/efl_pack_layout.eo
@@ -4,7 +4,6 @@ interface Efl.Pack.Layout ()
 
      Used for containers (box, grid).
    ]]
-   legacy_prefix: null;
    eo_prefix: efl_pack;
    methods {
       @property layout_engine {
diff --git a/src/lib/efl/interfaces/efl_pack_linear.eo b/src/lib/efl/interfaces/efl_pack_linear.eo
index 8f97f6db2f..4ffb7efb88 100644
--- a/src/lib/efl/interfaces/efl_pack_linear.eo
+++ b/src/lib/efl/interfaces/efl_pack_linear.eo
@@ -4,7 +4,6 @@ import efl_orientation;
 interface Efl.Pack.Linear (Efl.Pack)
 {
    [[API for containers ]]
-   legacy_prefix: null;
    eo_prefix: efl_pack;
    methods {
       pack_begin {
diff --git a/src/lib/efl/interfaces/efl_player.eo b/src/lib/efl/interfaces/efl_player.eo
index c73fa191ce..41b1395151 100644
--- a/src/lib/efl/interfaces/efl_player.eo
+++ b/src/lib/efl/interfaces/efl_player.eo
@@ -1,5 +1,4 @@
 interface Efl.Player {
-   legacy_prefix: null;
    methods {
         @property playable {
              [[Whether or not the object data can be played.]]
diff --git a/src/lib/efl/interfaces/efl_text.eo b/src/lib/efl/interfaces/efl_text.eo
index e966923c84..4f2c4bdd87 100644
--- a/src/lib/efl/interfaces/efl_text.eo
+++ b/src/lib/efl/interfaces/efl_text.eo
@@ -1,5 +1,4 @@
 interface Efl.Text {
-   legacy_prefix: null;
    methods {
       @property text {
          set {
diff --git a/src/lib/efl/interfaces/efl_text_properties.eo b/src/lib/efl/interfaces/efl_text_properties.eo
index 110a8e2ab6..884d2c78f7 100644
--- a/src/lib/efl/interfaces/efl_text_properties.eo
+++ b/src/lib/efl/interfaces/efl_text_properties.eo
@@ -1,7 +1,6 @@
 type Efl_Font_Size: int;
 
 interface Efl.Text.Properties {
-   legacy_prefix: null;
    methods {
       @property font {
          set {
diff --git a/src/lib/efl/interfaces/efl_ui_progress.eo b/src/lib/efl/interfaces/efl_ui_progress.eo
index 5098cd561e..81704cc9a6 100644
--- a/src/lib/efl/interfaces/efl_ui_progress.eo
+++ b/src/lib/efl/interfaces/efl_ui_progress.eo
@@ -1,5 +1,4 @@
 interface Efl.Ui.Progress {
-   legacy_prefix: null;
    methods {
       @property span_size {
          [[Control the (exact) length of the bar region of a given progress widget
diff --git a/src/lib/efl/interfaces/efl_ui_spin.eo b/src/lib/efl/interfaces/efl_ui_spin.eo
index 20ac64b30f..c861523598 100644
--- a/src/lib/efl/interfaces/efl_ui_spin.eo
+++ b/src/lib/efl/interfaces/efl_ui_spin.eo
@@ -1,6 +1,5 @@
 interface Efl.Ui.Spin()
 {
-   legacy_prefix: null;
    methods {
       @property min_max {
          [[Control the minimum and maximum values for the spinner.
diff --git a/src/lib/efl/interfaces/efl_vpath.eo b/src/lib/efl/interfaces/efl_vpath.eo
index 70e27815b4..a5fd9acd81 100644
--- a/src/lib/efl/interfaces/efl_vpath.eo
+++ b/src/lib/efl/interfaces/efl_vpath.eo
@@ -18,7 +18,6 @@ interface Efl.Vpath
 
      @since 1.18
    ]]
-   legacy_prefix: null;
    eo_prefix: efl_vpath;
    methods {
       fetch {
diff --git a/src/lib/efl/interfaces/efl_vpath_core.eo b/src/lib/efl/interfaces/efl_vpath_core.eo
index e871df8700..b14740a52b 100644
--- a/src/lib/efl/interfaces/efl_vpath_core.eo
+++ b/src/lib/efl/interfaces/efl_vpath_core.eo
@@ -4,7 +4,6 @@ class Efl.Vpath.Core (Eo.Base, Efl.Vpath)
 
    @since 1.18
    ]]
-   legacy_prefix: null;
    eo_prefix: efl_vpath_core;
    methods {
       get @class {
diff --git a/src/lib/efl/interfaces/efl_vpath_file.eo b/src/lib/efl/interfaces/efl_vpath_file.eo
index b3dcf342f7..d55a1eb6cd 100644
--- a/src/lib/efl/interfaces/efl_vpath_file.eo
+++ b/src/lib/efl/interfaces/efl_vpath_file.eo
@@ -14,7 +14,6 @@ class Efl.Vpath.File (Eo.Base)
 
       @since 1.18
    ]]
-   legacy_prefix: null;
    eo_prefix: efl_vpath_file;
    methods {
       @property path {
diff --git a/src/lib/efl/interfaces/efl_vpath_file_core.eo b/src/lib/efl/interfaces/efl_vpath_file_core.eo
index 7c6eabbfd0..cee760fb7e 100644
--- a/src/lib/efl/interfaces/efl_vpath_file_core.eo
+++ b/src/lib/efl/interfaces/efl_vpath_file_core.eo
@@ -4,7 +4,6 @@ class Efl.Vpath.File.Core (Efl.Vpath.File)
 
    @since 1.18
    ]]
-   legacy_prefix: null;
    eo_prefix: efl_vpath_file_core;
    implements {
       Eo.Base.constructor;
diff --git a/src/lib/efl/interfaces/efl_vpath_manager.eo b/src/lib/efl/interfaces/efl_vpath_manager.eo
index c81e146c4f..e8684930ec 100644
--- a/src/lib/efl/interfaces/efl_vpath_manager.eo
+++ b/src/lib/efl/interfaces/efl_vpath_manager.eo
@@ -4,7 +4,6 @@ class Efl.Vpath.Manager (Eo.Base)
 
    @since 1.18
    ]]
-   legacy_prefix: null;
    eo_prefix: efl_vpath_manager;
    methods {
       fetch @class {
diff --git a/src/lib/eio/eio_model.eo b/src/lib/eio/eio_model.eo
index 14080a035c..ce6fddc709 100644
--- a/src/lib/eio/eio_model.eo
+++ b/src/lib/eio/eio_model.eo
@@ -4,7 +4,6 @@ class Eio.Model (Eo.Base, Efl.Model)
 {
     [[Eio model class]]
 
-    legacy_prefix: null;
     methods {
        children_filter_set {
           [[Set children filter callback.
diff --git a/src/lib/eldbus/eldbus_model_arguments.eo b/src/lib/eldbus/eldbus_model_arguments.eo
index a5e908b87b..07e1505096 100644
--- a/src/lib/eldbus/eldbus_model_arguments.eo
+++ b/src/lib/eldbus/eldbus_model_arguments.eo
@@ -3,7 +3,6 @@ import eldbus_types;
 class Eldbus.Model.Arguments (Eo.Base, Efl.Model) {
     [[Eldbus model arguments class]]
 
-    legacy_prefix: null;
     methods {
         constructor {
             [[Custom Eldbus_Model_Arguments constructor.
diff --git a/src/lib/eldbus/eldbus_model_connection.eo b/src/lib/eldbus/eldbus_model_connection.eo
index 5b4fc2b3ca..303000b32e 100644
--- a/src/lib/eldbus/eldbus_model_connection.eo
+++ b/src/lib/eldbus/eldbus_model_connection.eo
@@ -1,7 +1,6 @@
 class Eldbus.Model.Connection (Eo.Base, Efl.Model) {
     [[Eldbus model connection class]]
 
-    legacy_prefix: null;
     methods {
         constructor {
             [[Custom Eldbus_Model_Connection constructor.
diff --git a/src/lib/eldbus/eldbus_model_method.eo b/src/lib/eldbus/eldbus_model_method.eo
index 3d27aa7e2e..f7c13d03a0 100644
--- a/src/lib/eldbus/eldbus_model_method.eo
+++ b/src/lib/eldbus/eldbus_model_method.eo
@@ -2,7 +2,6 @@ import eldbus_types;
 
 class Eldbus.Model.Method (Eldbus.Model.Arguments) {
     [[Eldbus model method class]]
-    legacy_prefix: null;
     methods {
         constructor {
             [[Custom Eldbus_Model_Method constructor.
diff --git a/src/lib/eldbus/eldbus_model_object.eo b/src/lib/eldbus/eldbus_model_object.eo
index b269416473..1f999ccc2b 100644
--- a/src/lib/eldbus/eldbus_model_object.eo
+++ b/src/lib/eldbus/eldbus_model_object.eo
@@ -3,7 +3,6 @@ import eldbus_types;
 class Eldbus.Model.Object (Eo.Base, Efl.Model) {
     [[Eldbus model object class]]
 
-    legacy_prefix: null;
     data: Eldbus_Model_Object_Data;
     methods {
         constructor {
diff --git a/src/lib/eldbus/eldbus_model_proxy.eo b/src/lib/eldbus/eldbus_model_proxy.eo
index bccd9bd912..d0b4e240a1 100644
--- a/src/lib/eldbus/eldbus_model_proxy.eo
+++ b/src/lib/eldbus/eldbus_model_proxy.eo
@@ -3,7 +3,6 @@ import eldbus_types;
 class Eldbus.Model.Proxy (Eo.Base, Efl.Model) {
     [[Eldbus model proxy class]]
 
-    legacy_prefix: null;
     methods {
         constructor {
             [[Custom Eldbus_Model_Proxy constructor.
diff --git a/src/lib/eldbus/eldbus_model_signal.eo b/src/lib/eldbus/eldbus_model_signal.eo
index 1e1f260a15..096934b85b 100644
--- a/src/lib/eldbus/eldbus_model_signal.eo
+++ b/src/lib/eldbus/eldbus_model_signal.eo
@@ -1,7 +1,6 @@
 class Eldbus.Model.Signal (Eldbus.Model.Arguments) {
     [[Eldbus model signal class]]
 
-    legacy_prefix: null;
     methods {
         constructor {
               [[Custom Eldbus_Model_Signal constructor.
diff --git a/src/lib/elementary/efl_ui_box.eo b/src/lib/elementary/efl_ui_box.eo
index bf44d669f3..9fe4ab6700 100644
--- a/src/lib/elementary/efl_ui_box.eo
+++ b/src/lib/elementary/efl_ui_box.eo
@@ -1,6 +1,5 @@
 class Efl.Ui.Box (Elm.Widget, Efl.Pack.Linear, Efl.Pack.Layout)
 {
-   legacy_prefix: null;
    implements {
       Eo.Base.constructor;
 
diff --git a/src/lib/elementary/efl_ui_box_flow.eo b/src/lib/elementary/efl_ui_box_flow.eo
index 38dc459bad..ca06e210f5 100644
--- a/src/lib/elementary/efl_ui_box_flow.eo
+++ b/src/lib/elementary/efl_ui_box_flow.eo
@@ -7,7 +7,6 @@ struct Efl.Ui.Box.Flow_Params {
 class Efl.Ui.Box.Flow (Efl.Ui.Box, Efl.Pack.Layout)
 {
    [[A custom layout engine for @Efl.Ui.Box.]]
-   legacy_prefix: null;
    methods {
       @property box_flow_homogenous {
          set {}
diff --git a/src/lib/elementary/efl_ui_grid.eo b/src/lib/elementary/efl_ui_grid.eo
index 3f827f7452..71d8289f49 100644
--- a/src/lib/elementary/efl_ui_grid.eo
+++ b/src/lib/elementary/efl_ui_grid.eo
@@ -1,6 +1,5 @@
 class Efl.Ui.Grid (Elm.Widget, Efl.Pack.Grid, Efl.Pack.Layout)
 {
-   legacy_prefix: null;
    implements {
       Eo.Base.constructor;
 
diff --git a/src/lib/elementary/efl_ui_layout_internal_box.eo b/src/lib/elementary/efl_ui_layout_internal_box.eo
index 7ba47c69b9..29aa738913 100644
--- a/src/lib/elementary/efl_ui_layout_internal_box.eo
+++ b/src/lib/elementary/efl_ui_layout_internal_box.eo
@@ -5,7 +5,6 @@ class Efl.Ui.Layout_Internal.Box (Eo.Base, Efl.Pack.Linear)
      Can not be deleted, this is only a representation of an internal object
      of an EFL layout.
    ]]
-   legacy_prefix: null;
    data: Efl_Ui_Layout_Table_Data;
    methods {
       @property real_part @protected {
diff --git a/src/lib/elementary/efl_ui_layout_internal_table.eo b/src/lib/elementary/efl_ui_layout_internal_table.eo
index c17bb77847..c0f8a7eb6d 100644
--- a/src/lib/elementary/efl_ui_layout_internal_table.eo
+++ b/src/lib/elementary/efl_ui_layout_internal_table.eo
@@ -5,7 +5,6 @@ class Efl.Ui.Layout_Internal.Table (Eo.Base, Efl.Pack.Grid)
      Can not be deleted, this is only a representation of an internal object
      of an EFL layout.
    ]]
-   legacy_prefix: null;
    data: Efl_Ui_Layout_Table_Data;
    methods {
       @property real_part @protected {
diff --git a/src/lib/elementary/efl_ui_nstate.eo b/src/lib/elementary/efl_ui_nstate.eo
index 901e8244f6..981ae6e1ec 100644
--- a/src/lib/elementary/efl_ui_nstate.eo
+++ b/src/lib/elementary/efl_ui_nstate.eo
@@ -1,6 +1,5 @@
 class Efl.Ui.Nstate(Elm.Button)
 {
-   legacy_prefix: null;
    methods {
       activate @protected {
       }
diff --git a/src/lib/elementary/elm_app_client.eo b/src/lib/elementary/elm_app_client.eo
index 1e8d30c387..8d2ef874ea 100644
--- a/src/lib/elementary/elm_app_client.eo
+++ b/src/lib/elementary/elm_app_client.eo
@@ -5,7 +5,6 @@ type Elm_App_Client_Pending: __undefined_type;
 
 class Elm.App.Client (Eo.Base)
 {
-   legacy_prefix: null;
    methods {
       @property views {
          get {
diff --git a/src/lib/elementary/elm_app_client_view.eo b/src/lib/elementary/elm_app_client_view.eo
index 4995676045..9ce26f018a 100644
--- a/src/lib/elementary/elm_app_client_view.eo
+++ b/src/lib/elementary/elm_app_client_view.eo
@@ -4,7 +4,6 @@ type Elm_App_Client_View_Cb: __undefined_type;
 
 class Elm.App.Client.View (Eo.Base)
 {
-   legacy_prefix: null;
    methods {
       @property state {
          get {
diff --git a/src/lib/elementary/elm_app_server.eo b/src/lib/elementary/elm_app_server.eo
index f6291f0891..0036ba1f99 100644
--- a/src/lib/elementary/elm_app_server.eo
+++ b/src/lib/elementary/elm_app_server.eo
@@ -5,7 +5,6 @@ type Elm_App_Server_Create_View_Cb: __undefined_type;
 
 class Elm.App.Server (Eo.Base)
 {
-   legacy_prefix: null;
    eo_prefix: elm_app_server;
    methods {
       @property icon {
diff --git a/src/lib/elementary/elm_app_server_view.eo b/src/lib/elementary/elm_app_server_view.eo
index a21b7eb531..e439b1db52 100644
--- a/src/lib/elementary/elm_app_server_view.eo
+++ b/src/lib/elementary/elm_app_server_view.eo
@@ -2,7 +2,6 @@ import elm_general;
 
 class Elm.App.Server.View (Eo.Base)
 {
-   legacy_prefix: null;
    eo_prefix: elm_app_server_view;
    methods {
       @property progress {
diff --git a/src/lib/elementary/elm_interface_atspi_accessible.eo b/src/lib/elementary/elm_interface_atspi_accessible.eo
index a48775c558..b60a8db285 100644
--- a/src/lib/elementary/elm_interface_atspi_accessible.eo
+++ b/src/lib/elementary/elm_interface_atspi_accessible.eo
@@ -224,7 +224,6 @@ type Elm.Atspi.Relation_Set: list<Elm.Atspi.Relation *> *;
 
 mixin Elm.Interface.Atspi_Accessible ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_accessible;
    data: Elm_Interface_Atspi_Accessible_Data;
    methods {
diff --git a/src/lib/elementary/elm_interface_atspi_action.eo b/src/lib/elementary/elm_interface_atspi_action.eo
index 1fea7bff69..5a229b04d5 100644
--- a/src/lib/elementary/elm_interface_atspi_action.eo
+++ b/src/lib/elementary/elm_interface_atspi_action.eo
@@ -1,6 +1,5 @@
 mixin Elm.Interface.Atspi_Action ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_action;
    data: null;
    methods {
diff --git a/src/lib/elementary/elm_interface_atspi_component.eo b/src/lib/elementary/elm_interface_atspi_component.eo
index e08c3c2cd1..115cd20223 100644
--- a/src/lib/elementary/elm_interface_atspi_component.eo
+++ b/src/lib/elementary/elm_interface_atspi_component.eo
@@ -1,6 +1,5 @@
 mixin Elm.Interface.Atspi_Component ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_component;
    data: null;
    methods {
diff --git a/src/lib/elementary/elm_interface_atspi_image.eo b/src/lib/elementary/elm_interface_atspi_image.eo
index 0ab631dc07..ac09f12c15 100644
--- a/src/lib/elementary/elm_interface_atspi_image.eo
+++ b/src/lib/elementary/elm_interface_atspi_image.eo
@@ -1,6 +1,5 @@
 mixin Elm.Interface.Atspi_Image ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_image;
    data: null;
    methods {
diff --git a/src/lib/elementary/elm_interface_atspi_selection.eo b/src/lib/elementary/elm_interface_atspi_selection.eo
index 5144a23164..e7d47629cd 100644
--- a/src/lib/elementary/elm_interface_atspi_selection.eo
+++ b/src/lib/elementary/elm_interface_atspi_selection.eo
@@ -1,6 +1,5 @@
 interface Elm.Interface.Atspi.Selection ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_selection;
    methods {
       @property selected_children_count @protected {
diff --git a/src/lib/elementary/elm_interface_atspi_text.eo b/src/lib/elementary/elm_interface_atspi_text.eo
index 152c383d11..6cc1d5311a 100644
--- a/src/lib/elementary/elm_interface_atspi_text.eo
+++ b/src/lib/elementary/elm_interface_atspi_text.eo
@@ -41,7 +41,6 @@ struct Elm.Atspi_Text.Change_Info
 
 interface Elm.Interface.Atspi.Text ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_text;
    methods {
       @property character @protected {
diff --git a/src/lib/elementary/elm_interface_atspi_text_editable.eo b/src/lib/elementary/elm_interface_atspi_text_editable.eo
index a6bc8adf09..dc75a30d26 100644
--- a/src/lib/elementary/elm_interface_atspi_text_editable.eo
+++ b/src/lib/elementary/elm_interface_atspi_text_editable.eo
@@ -1,6 +1,5 @@
 interface Elm.Interface.Atspi.Text.Editable ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_text_editable;
    methods {
       @property content @protected {
diff --git a/src/lib/elementary/elm_interface_atspi_value.eo b/src/lib/elementary/elm_interface_atspi_value.eo
index c0ae236447..330e9e9370 100644
--- a/src/lib/elementary/elm_interface_atspi_value.eo
+++ b/src/lib/elementary/elm_interface_atspi_value.eo
@@ -1,6 +1,5 @@
 interface Elm.Interface.Atspi.Value ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_value;
    methods {
       @property value_and_text @protected {
diff --git a/src/lib/elementary/elm_interface_atspi_widget_action.eo b/src/lib/elementary/elm_interface_atspi_widget_action.eo
index e374b06b4a..633b133242 100644
--- a/src/lib/elementary/elm_interface_atspi_widget_action.eo
+++ b/src/lib/elementary/elm_interface_atspi_widget_action.eo
@@ -2,7 +2,6 @@ type Elm_Atspi_Action: __undefined_type;
 
 mixin Elm.Interface.Atspi_Widget_Action (Elm.Interface.Atspi_Action)
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_atspi_widget_action;
    data: null;
    methods {
diff --git a/src/lib/elementary/elm_interface_fileselector.eo b/src/lib/elementary/elm_interface_fileselector.eo
index 065107334c..5c6774803c 100644
--- a/src/lib/elementary/elm_interface_fileselector.eo
+++ b/src/lib/elementary/elm_interface_fileselector.eo
@@ -28,7 +28,6 @@ enum Elm.Fileselector.Sort
 
 interface Elm.Interface.Fileselector ()
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_fileselector;
    methods {
       @property folder_only {
diff --git a/src/lib/elementary/elm_interface_scrollable.eo b/src/lib/elementary/elm_interface_scrollable.eo
index 1bdcc5aa91..782bdbdc43 100644
--- a/src/lib/elementary/elm_interface_scrollable.eo
+++ b/src/lib/elementary/elm_interface_scrollable.eo
@@ -44,7 +44,6 @@ enum Elm.Scroller.Movement_Block
 
 mixin Elm.Interface_Scrollable(Evas.Scrollable_Interface, Evas.Object.Smart)
 {
-   legacy_prefix: null;
    eo_prefix: elm_interface_scrollable;
    data: Elm_Scrollable_Smart_Interface_Data;
    methods {
diff --git a/src/lib/elementary/elm_view_form.eo b/src/lib/elementary/elm_view_form.eo
index 2439e1b4a7..a47a2dd3da 100644
--- a/src/lib/elementary/elm_view_form.eo
+++ b/src/lib/elementary/elm_view_form.eo
@@ -1,6 +1,5 @@
 class Elm.View.Form (Eo.Base)
 {
-    legacy_prefix: null;
     methods {
         model_set {
              [[Set model
diff --git a/src/lib/elementary/elm_view_list.eo b/src/lib/elementary/elm_view_list.eo
index c47f7c94e6..3961be0d72 100644
--- a/src/lib/elementary/elm_view_list.eo
+++ b/src/lib/elementary/elm_view_list.eo
@@ -2,7 +2,6 @@ import elm_genlist_item;
 
 class Elm.View.List (Eo.Base)
 {
-    legacy_prefix: null;
     methods {
         genlist_set {
              [[Constructor wrapper
diff --git a/src/lib/eo/eo_base.eo b/src/lib/eo/eo_base.eo
index ff06b8a0af..ff57a83e06 100644
--- a/src/lib/eo/eo_base.eo
+++ b/src/lib/eo/eo_base.eo
@@ -46,7 +46,6 @@ type Eo.Callback_Priority: short; [[Callback priority value. Range is -32k - 32k
 abstract Eo.Base ()
 {
    eo_prefix: eo;
-   legacy_prefix: null;
 
    methods {
       @property parent {
diff --git a/src/lib/evas/canvas/efl_canvas_polygon.eo b/src/lib/evas/canvas/efl_canvas_polygon.eo
index 423be8d982..8b46f24320 100644
--- a/src/lib/evas/canvas/efl_canvas_polygon.eo
+++ b/src/lib/evas/canvas/efl_canvas_polygon.eo
@@ -2,7 +2,6 @@ class Efl.Canvas.Polygon (Evas.Object)
 {
    [[Low-level polygon object]]
 
-   legacy_prefix: null;
    methods {
       point_add {
          [[Adds the given point to the given evas polygon object.]]
diff --git a/src/lib/evas/canvas/efl_canvas_proxy.eo b/src/lib/evas/canvas/efl_canvas_proxy.eo
index 6c42aa74ee..cd73696d9f 100644
--- a/src/lib/evas/canvas/efl_canvas_proxy.eo
+++ b/src/lib/evas/canvas/efl_canvas_proxy.eo
@@ -6,7 +6,6 @@ class Efl.Canvas.Proxy (Evas.Image, Efl.Gfx.Buffer)
      object attached to it. It can be used to apply some sort of image
      transformation to any object (eg. filters, map or zoom).
    ]]
-   legacy_prefix: null;
    data: null;
    methods {
       @property source {
diff --git a/src/lib/evas/canvas/efl_canvas_scene3d.eo b/src/lib/evas/canvas/efl_canvas_scene3d.eo
index 0cca69f68c..2f2929e60b 100644
--- a/src/lib/evas/canvas/efl_canvas_scene3d.eo
+++ b/src/lib/evas/canvas/efl_canvas_scene3d.eo
@@ -1,7 +1,6 @@
 class Efl.Canvas.Scene3d (Evas.Image)
 {
    [[A UI view for EFL Canvas 3D.]]
-   legacy_prefix: null;
    data: null;
    methods {
       @property scene3d {
diff --git a/src/lib/evas/canvas/efl_canvas_snapshot.eo b/src/lib/evas/canvas/efl_canvas_snapshot.eo
index fafaada44b..b2234ec8ad 100644
--- a/src/lib/evas/canvas/efl_canvas_snapshot.eo
+++ b/src/lib/evas/canvas/efl_canvas_snapshot.eo
@@ -6,7 +6,6 @@ class Efl.Canvas.Snapshot (Evas.Image)
      all the objects below it. This allows applications to save screenshots
      of all or part of their UI, or apply filters to parts of the UI.
    ]]
-   legacy_prefix: null;
    data: null;
    implements {
       Eo.Base.constructor;
diff --git a/src/lib/evas/canvas/efl_canvas_surface.eo b/src/lib/evas/canvas/efl_canvas_surface.eo
index e83c4ed001..ae61ddd536 100644
--- a/src/lib/evas/canvas/efl_canvas_surface.eo
+++ b/src/lib/evas/canvas/efl_canvas_surface.eo
@@ -8,7 +8,6 @@ mixin Efl.Canvas.Surface (Evas.Image)
      (C or C++), with direct access to the display system or a buffer
      allocation system.
    ]]
-   legacy_prefix: null;
    methods {
       @property native_buffer {
           [[External buffer attached to this native surface.
diff --git a/src/lib/evas/canvas/efl_canvas_surface_tbm.eo b/src/lib/evas/canvas/efl_canvas_surface_tbm.eo
index be0e177bf1..7f814b5f4c 100644
--- a/src/lib/evas/canvas/efl_canvas_surface_tbm.eo
+++ b/src/lib/evas/canvas/efl_canvas_surface_tbm.eo
@@ -2,7 +2,6 @@ class Efl.Canvas.Surface.Tbm (Efl.Canvas.Surface)
 {
    [[Native Tizen Buffer Manager surface for Efl canvas]]
 
-   legacy_prefix: null;
    implements {
       Eo.Base.constructor;
       Eo.Base.destructor;
diff --git a/src/lib/evas/canvas/efl_canvas_surface_wayland.eo b/src/lib/evas/canvas/efl_canvas_surface_wayland.eo
index f06885e7a6..0da8e47119 100644
--- a/src/lib/evas/canvas/efl_canvas_surface_wayland.eo
+++ b/src/lib/evas/canvas/efl_canvas_surface_wayland.eo
@@ -2,7 +2,6 @@ class Efl.Canvas.Surface.Wayland (Efl.Canvas.Surface)
 {
    [[Native Wayland surface for Efl canvas]]
 
-   legacy_prefix: null;
    implements {
       Eo.Base.constructor;
       Eo.Base.destructor;
diff --git a/src/lib/evas/canvas/efl_canvas_surface_x11.eo b/src/lib/evas/canvas/efl_canvas_surface_x11.eo
index 6a98ddd1da..c454f46b41 100644
--- a/src/lib/evas/canvas/efl_canvas_surface_x11.eo
+++ b/src/lib/evas/canvas/efl_canvas_surface_x11.eo
@@ -9,7 +9,6 @@ class Efl.Canvas.Surface.X11 (Efl.Canvas.Surface)
 {
    [[Native X11 surface for Efl canvas]]
 
-   legacy_prefix: null;
    methods {
       @property pixmap {
          [[This is a helper for @Efl.Canvas.Surface.native_buffer.]]
diff --git a/src/lib/evas/canvas/evas_canvas3d_camera.eo b/src/lib/evas/canvas/evas_canvas3d_camera.eo
index 80c5fa4143..17751a6814 100644
--- a/src/lib/evas/canvas/evas_canvas3d_camera.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_camera.eo
@@ -2,7 +2,6 @@ import evas_types;
 
 class Evas.Canvas3D.Camera (Evas.Canvas3D.Object, Evas.Common_Interface)
 {
-   legacy_prefix: null;
    data: Evas_Canvas3D_Camera_Data;
    methods {
       projection_matrix_set {
diff --git a/src/lib/evas/canvas/evas_canvas3d_light.eo b/src/lib/evas/canvas/evas_canvas3d_light.eo
index ce7d033ae2..e65090c538 100644
--- a/src/lib/evas/canvas/evas_canvas3d_light.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_light.eo
@@ -2,7 +2,6 @@ import evas_types;
 
 class Evas.Canvas3D.Light (Evas.Canvas3D.Object, Evas.Common_Interface)
 {
-   legacy_prefix: null;
    data: Evas_Canvas3D_Light_Data;
 
    methods {
diff --git a/src/lib/evas/canvas/evas_canvas3d_material.eo b/src/lib/evas/canvas/evas_canvas3d_material.eo
index 9d072c0ab1..44bbbd8e90 100644
--- a/src/lib/evas/canvas/evas_canvas3d_material.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_material.eo
@@ -1,6 +1,5 @@
 class Evas.Canvas3D.Material (Evas.Canvas3D.Object, Evas.Common_Interface)
 {
-   legacy_prefix: null;
    data: Evas_Canvas3D_Material_Data;
    methods {
       color_set {
diff --git a/src/lib/evas/canvas/evas_canvas3d_mesh.eo b/src/lib/evas/canvas/evas_canvas3d_mesh.eo
index 2c1875090c..9aed7c46bc 100644
--- a/src/lib/evas/canvas/evas_canvas3d_mesh.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_mesh.eo
@@ -3,7 +3,6 @@ import evas_types;
 
 class Evas.Canvas3D.Mesh (Evas.Canvas3D.Object, Evas.Common_Interface, Efl.File)
 {
-   legacy_prefix: null;
    data: Evas_Canvas3D_Mesh_Data;
 
    methods {
diff --git a/src/lib/evas/canvas/evas_canvas3d_node.eo b/src/lib/evas/canvas/evas_canvas3d_node.eo
index bded3241fe..274ca5961c 100644
--- a/src/lib/evas/canvas/evas_canvas3d_node.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_node.eo
@@ -2,7 +2,6 @@ import evas_types;
 
 class Evas.Canvas3D.Node (Evas.Canvas3D.Object, Evas.Common_Interface)
 {
-   legacy_prefix: null;
    data: Evas_Canvas3D_Node_Data;
    methods {
       constructor {
diff --git a/src/lib/evas/canvas/evas_canvas3d_object.eo b/src/lib/evas/canvas/evas_canvas3d_object.eo
index 75dadeed3b..87ac8e3940 100644
--- a/src/lib/evas/canvas/evas_canvas3d_object.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_object.eo
@@ -2,7 +2,6 @@ import evas_types;
 
 class Evas.Canvas3D.Object (Eo.Base, Evas.Common_Interface)
 {
-   legacy_prefix: null;
    data: Evas_Canvas3D_Object_Data;
    methods {
       change {
diff --git a/src/lib/evas/canvas/evas_canvas3d_primitive.eo b/src/lib/evas/canvas/evas_canvas3d_primitive.eo
index 991e188cbf..89d9529a73 100644
--- a/src/lib/evas/canvas/evas_canvas3d_primitive.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_primitive.eo
@@ -2,7 +2,6 @@ import evas_types;
 
 class Evas.Canvas3D.Primitive (Evas.Canvas3D.Object, Evas.Common_Interface)
 {
-   legacy_prefix: null;
    data: Evas_Canvas3D_Primitive_Data;
 
    methods {
diff --git a/src/lib/evas/canvas/evas_canvas3d_scene.eo b/src/lib/evas/canvas/evas_canvas3d_scene.eo
index 283c3d4636..5656ff70d5 100644
--- a/src/lib/evas/canvas/evas_canvas3d_scene.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_scene.eo
@@ -2,7 +2,6 @@ import evas_types;
 
 class Evas.Canvas3D.Scene (Evas.Canvas3D.Object, Evas.Common_Interface)
 {
-   legacy_prefix: null;
    data: Evas_Canvas3D_Scene_Data;
    methods {
       size_set {
diff --git a/src/lib/evas/canvas/evas_canvas3d_texture.eo b/src/lib/evas/canvas/evas_canvas3d_texture.eo
index d0ee17e316..bc25c23548 100644
--- a/src/lib/evas/canvas/evas_canvas3d_texture.eo
+++ b/src/lib/evas/canvas/evas_canvas3d_texture.eo
@@ -2,7 +2,6 @@ type @extern Evas_Colorspace: int; /* FIXME: Need to get emile migrated. */
 
 class Evas.Canvas3D.Texture (Evas.Canvas3D.Object, Evas.Common_Interface)
 {
-   legacy_prefix: null;
    data : Evas_Canvas3D_Texture_Data;
    methods {
       @property source_visible {
diff --git a/src/lib/evas/canvas/evas_draggable_interface.eo b/src/lib/evas/canvas/evas_draggable_interface.eo
index 3da51ec328..ee103324cc 100644
--- a/src/lib/evas/canvas/evas_draggable_interface.eo
+++ b/src/lib/evas/canvas/evas_draggable_interface.eo
@@ -1,6 +1,5 @@
 interface Evas.Draggable_Interface (Evas.Signal_Interface)
 {
-   legacy_prefix: null;
    methods {
         @property drag_target {
              [[Contrtol whether the object's content is changed by drag and drop.
diff --git a/src/lib/evas/canvas/evas_filter.eo b/src/lib/evas/canvas/evas_filter.eo
index d9e4d7ac56..cd825c29c8 100644
--- a/src/lib/evas/canvas/evas_filter.eo
+++ b/src/lib/evas/canvas/evas_filter.eo
@@ -3,7 +3,6 @@ mixin Evas.Filter (Efl.Gfx.Filter, Eo.Base)
    [[Evas internal implementation of filters.]]
 
    eo_prefix: evas;
-   legacy_prefix: null;
 
    methods {
       @property filter_changed @protected {
diff --git a/src/lib/evas/include/evas_ector_buffer.eo b/src/lib/evas/include/evas_ector_buffer.eo
index cbf8c8b092..85a9f6b01a 100644
--- a/src/lib/evas/include/evas_ector_buffer.eo
+++ b/src/lib/evas/include/evas_ector_buffer.eo
@@ -4,7 +4,6 @@ import evas_canvas;
 
 interface Evas.Ector.Buffer
 {
-   legacy_prefix: null;
    methods {
       @property engine_image {
          get {}
diff --git a/src/modules/evas/engines/gl_generic/evas_ector_gl_buffer.eo b/src/modules/evas/engines/gl_generic/evas_ector_gl_buffer.eo
index 6912657250..e36073e20f 100644
--- a/src/modules/evas/engines/gl_generic/evas_ector_gl_buffer.eo
+++ b/src/modules/evas/engines/gl_generic/evas_ector_gl_buffer.eo
@@ -1,5 +1,4 @@
 class Evas.Ector.GL.Buffer (Eo.Base, Evas.Ector.Buffer, Ector.GL.Buffer.Base)
 {
-   legacy_prefix: null;
    data: null;
 }
diff --git a/src/modules/evas/engines/gl_generic/evas_ector_gl_image_buffer.eo b/src/modules/evas/engines/gl_generic/evas_ector_gl_image_buffer.eo
index 3ea2c65a31..915fcc09fe 100644
--- a/src/modules/evas/engines/gl_generic/evas_ector_gl_image_buffer.eo
+++ b/src/modules/evas/engines/gl_generic/evas_ector_gl_image_buffer.eo
@@ -1,7 +1,6 @@
 class Evas.Ector.GL.Image.Buffer (Evas.Ector.GL.Buffer, Evas.Ector.Buffer)
 {
    [[An Ector GL buffer wrapping an existing Evas_GL_Image.]]
-   legacy_prefix: null;
    implements {
       Eo.Base.constructor;
       Eo.Base.finalize;
diff --git a/src/modules/evas/engines/gl_generic/evas_ector_gl_rgbaimage_buffer.eo b/src/modules/evas/engines/gl_generic/evas_ector_gl_rgbaimage_buffer.eo
index 3c8f38397b..b6e07505c0 100644
--- a/src/modules/evas/engines/gl_generic/evas_ector_gl_rgbaimage_buffer.eo
+++ b/src/modules/evas/engines/gl_generic/evas_ector_gl_rgbaimage_buffer.eo
@@ -1,7 +1,6 @@
 class Evas.Ector.GL.RGBAImage.Buffer (Ector.Software.Buffer, Evas.Ector.Buffer)
 {
    [[A buffer object wrapping an existing Evas RGBA_Image for the GL Engine.]]
-   legacy_prefix: null;
    implements {
       Eo.Base.constructor;
       Eo.Base.finalize;
diff --git a/src/modules/evas/engines/software_generic/evas_ector_software_buffer.eo b/src/modules/evas/engines/software_generic/evas_ector_software_buffer.eo
index f6a1a200d3..b88a889b54 100644
--- a/src/modules/evas/engines/software_generic/evas_ector_software_buffer.eo
+++ b/src/modules/evas/engines/software_generic/evas_ector_software_buffer.eo
@@ -1,7 +1,6 @@
 class Evas.Ector.Software.Buffer (Ector.Software.Buffer, Evas.Ector.Buffer)
 {
    [[A buffer object wrapping an existing Evas Image_Entry.]]
-   legacy_prefix: null;
    implements {
       Eo.Base.constructor;
       Eo.Base.finalize;
diff --git a/src/tests/efl_js/benchmark_object.eo b/src/tests/efl_js/benchmark_object.eo
index 34dd142039..ded13990ec 100644
--- a/src/tests/efl_js/benchmark_object.eo
+++ b/src/tests/efl_js/benchmark_object.eo
@@ -1,6 +1,5 @@
 class Benchmark_Object (Eo.Base)
 {
-   legacy_prefix: null;
    data: null;
    methods {
       emptyarg {
diff --git a/src/tests/eina_cxx/simple.eo b/src/tests/eina_cxx/simple.eo
index 15aebecb49..79bc0615ab 100644
--- a/src/tests/eina_cxx/simple.eo
+++ b/src/tests/eina_cxx/simple.eo
@@ -1,6 +1,5 @@
 class Simple (Eo.Base)
 {
-   legacy_prefix: null;
    data: null;
    implements {
       Eo.Base.constructor;
diff --git a/src/tests/eolian/generated_promise.eo b/src/tests/eolian/generated_promise.eo
index 60fbe3e2ac..adb11484c2 100644
--- a/src/tests/eolian/generated_promise.eo
+++ b/src/tests/eolian/generated_promise.eo
@@ -1,6 +1,5 @@
 class Generated_Promise (Eo.Base)
 {
-   legacy_prefix: null;
    methods {
       method1 {
          params {
diff --git a/src/tests/eolian_cxx/a.eo b/src/tests/eolian_cxx/a.eo
index 18650afa38..82078e6eb7 100644
--- a/src/tests/eolian_cxx/a.eo
+++ b/src/tests/eolian_cxx/a.eo
@@ -1,6 +1,5 @@
 class A (Eo.Base)
 {
-   legacy_prefix: null;
    data: A_Data;
    implements {
       Eo.Base.constructor;
diff --git a/src/tests/eolian_cxx/b.eo b/src/tests/eolian_cxx/b.eo
index d9cce131d4..b134bacc64 100644
--- a/src/tests/eolian_cxx/b.eo
+++ b/src/tests/eolian_cxx/b.eo
@@ -1,6 +1,5 @@
 class B (A)
 {
-   legacy_prefix: null;
    data: B_Data;
    implements {
       Eo.Base.constructor;
diff --git a/src/tests/eolian_cxx/c.eo b/src/tests/eolian_cxx/c.eo
index dca3b4a385..9f2dc252e1 100644
--- a/src/tests/eolian_cxx/c.eo
+++ b/src/tests/eolian_cxx/c.eo
@@ -1,6 +1,5 @@
 class C (A)
 {
-   legacy_prefix: null;
    data: C_Data;
    implements {
       Eo.Base.constructor;
diff --git a/src/tests/eolian_cxx/callback.eo b/src/tests/eolian_cxx/callback.eo
index 1129420ebf..9dad09b2dd 100644
--- a/src/tests/eolian_cxx/callback.eo
+++ b/src/tests/eolian_cxx/callback.eo
@@ -2,7 +2,6 @@ import ecore_types;
 
 class Callback (Eo.Base)
 {
-   legacy_prefix: null;
    data: Callback_Data;
    methods {
       onecallback {
diff --git a/src/tests/eolian_cxx/d.eo b/src/tests/eolian_cxx/d.eo
index 1a68c91ea9..f4873ae8d7 100644
--- a/src/tests/eolian_cxx/d.eo
+++ b/src/tests/eolian_cxx/d.eo
@@ -1,6 +1,5 @@
 class D (B, C)
 {
-   legacy_prefix: null;
    data: D_Data;
    implements {
       Eo.Base.constructor;
diff --git a/src/tests/eolian_cxx/generic.eo b/src/tests/eolian_cxx/generic.eo
index 72722a9c6c..8b8a606fed 100644
--- a/src/tests/eolian_cxx/generic.eo
+++ b/src/tests/eolian_cxx/generic.eo
@@ -2,7 +2,6 @@ import ecore_types;
 
 class Generic (Eo.Base)
 {
-   legacy_prefix: null;
    data: Generic_Data;
    methods {
       @property req_ctor_a_value {
diff --git a/src/tests/eolian_cxx/name_name.eo b/src/tests/eolian_cxx/name_name.eo
index fd88a5e8c1..64b0db1ab4 100644
--- a/src/tests/eolian_cxx/name_name.eo
+++ b/src/tests/eolian_cxx/name_name.eo
@@ -1,4 +1,3 @@
 class Name.Name {
-  legacy_prefix: null;
 }
 
diff --git a/src/tests/eolian_cxx/ns_name.eo b/src/tests/eolian_cxx/ns_name.eo
index 50ab890f82..9610d82f23 100644
--- a/src/tests/eolian_cxx/ns_name.eo
+++ b/src/tests/eolian_cxx/ns_name.eo
@@ -1,4 +1,3 @@
 class Ns.Name {
-  legacy_prefix: null;
 }
 
diff --git a/src/tests/eolian_cxx/ns_name_other.eo b/src/tests/eolian_cxx/ns_name_other.eo
index 64a563ff0e..a8983c45c6 100644
--- a/src/tests/eolian_cxx/ns_name_other.eo
+++ b/src/tests/eolian_cxx/ns_name_other.eo
@@ -1,4 +1,3 @@
 class Ns.Name.Other {
-  legacy_prefix: null;
 }
 
diff --git a/src/tests/eolian_cxx/simple.eo b/src/tests/eolian_cxx/simple.eo
index 2d3216423c..f3ce6f08d0 100644
--- a/src/tests/eolian_cxx/simple.eo
+++ b/src/tests/eolian_cxx/simple.eo
@@ -1,6 +1,5 @@
 class Simple (Eo.Base)
 {
-   legacy_prefix: null;
    data: null;
    methods {
       simple_get {
diff --git a/src/tests/eolian_js/constructor_method_class.eo b/src/tests/eolian_js/constructor_method_class.eo
index f307a18fc5..416a591786 100644
--- a/src/tests/eolian_js/constructor_method_class.eo
+++ b/src/tests/eolian_js/constructor_method_class.eo
@@ -1,6 +1,5 @@
 class Constructor_Method_Class (Eo.Base)
 {
-   legacy_prefix: null;
    data: Constructor_Method_Class_Data;
    methods {
       @property fail {
diff --git a/src/tests/eolian_js/test_object.eo b/src/tests/eolian_js/test_object.eo
index 4cbfbdc60a..bf01eb0401 100644
--- a/src/tests/eolian_js/test_object.eo
+++ b/src/tests/eolian_js/test_object.eo
@@ -11,7 +11,6 @@ struct Test.Struct_Ex {
 }
 
 class Test.Object (Eo.Base) {
-   legacy_prefix: null;
    methods {
        method_integral_in_a_check {
            [[ tests integral in ]]