diff --git a/src/bin/eolian_mono/eolian/mono/type_impl.hh b/src/bin/eolian_mono/eolian/mono/type_impl.hh
index 8991247782..41cdf92f19 100644
--- a/src/bin/eolian_mono/eolian/mono/type_impl.hh
+++ b/src/bin/eolian_mono/eolian/mono/type_impl.hh
@@ -393,6 +393,16 @@ struct visitor_generate
              return c;
            }           
           }
+        , {"slice", nullptr, nullptr, [&]
+           {
+             return regular_type_def{" Eina.Slice", complex.outer.base_qualifier, {}};
+           }
+          }
+        , {"rw_slice", nullptr, nullptr, [&]
+           {
+             return regular_type_def{" Eina.RwSlice", complex.outer.base_qualifier, {}};
+           }
+          }
       };
 
       auto default_match = [&] (attributes::complex_type_def const& complex)
diff --git a/src/tests/efl_mono/Eina.cs b/src/tests/efl_mono/Eina.cs
index 90e8586d93..ace7fd980f 100644
--- a/src/tests/efl_mono/Eina.cs
+++ b/src/tests/efl_mono/Eina.cs
@@ -10,6 +10,8 @@ using static EinaTestData.BaseData;
 namespace TestSuite
 {
 
+#if EFL_BETA
+
 class TestEinaBinbuf
 {
     private static readonly byte[] test_string = System.Text.Encoding.UTF8.GetBytes("0123456789ABCDEF");
@@ -307,12 +309,15 @@ class TestEinaBinbuf
     }
 }
 
+#endif
+
 class TestEinaSlice
 {
     private static readonly byte[] base_seq = BaseSequence.Values();
     private static readonly GCHandle pinnedData = GCHandle.Alloc(base_seq, GCHandleType.Pinned);
     private static readonly IntPtr pinnedPtr = pinnedData.AddrOfPinnedObject();
 
+#if EFL_BETA
     public static void eina_slice_marshalling()
     {
         var binbuf = new Eina.Binbuf(base_seq);
@@ -323,6 +328,7 @@ class TestEinaSlice
         Test.Assert(slc.GetBytes().SequenceEqual(base_seq));
         Test.Assert(base_seq.Length == (int)(slc.Len));
     }
+#endif
 
     public static void eina_slice_size()
     {
@@ -330,12 +336,14 @@ class TestEinaSlice
         Test.Assert(Marshal.SizeOf(typeof(Eina.RwSlice)) == Marshal.SizeOf(typeof(UIntPtr)) + Marshal.SizeOf(typeof(IntPtr)));
     }
 
+#if EFL_BETA
     public static void pinned_data_set()
     {
         var binbuf = new Eina.Binbuf();
         binbuf.Append(new Eina.Slice().PinnedDataSet(pinnedPtr, (UIntPtr)3));
         Test.Assert(binbuf.GetBytes().SequenceEqual(base_seq));
     }
+#endif
 
     public static void test_eina_slice_in()
     {
diff --git a/src/tests/efl_mono/EinaTestData.cs b/src/tests/efl_mono/EinaTestData.cs
index b64040d5eb..81b318ffae 100644
--- a/src/tests/efl_mono/EinaTestData.cs
+++ b/src/tests/efl_mono/EinaTestData.cs
@@ -152,6 +152,7 @@ class NativeInheritImpl : Dummy.TestObject
 
     // //
     //
+#if EFL_BETA
     override public bool EinaBinbufIn(Eina.Binbuf binbuf)
     {
         binbuf_in_flag = true;
@@ -280,6 +281,7 @@ class NativeInheritImpl : Dummy.TestObject
         binbuf_return_own_binbuf = null;
         return r;
     }
+#endif
 }
 
 } // EinaTestData
diff --git a/src/tests/efl_mono/Events.cs b/src/tests/efl_mono/Events.cs
index b664e2bbbd..9e37649df1 100644
--- a/src/tests/efl_mono/Events.cs
+++ b/src/tests/efl_mono/Events.cs
@@ -176,6 +176,7 @@ class TestEoEvents
         Test.AssertEquals(sent_struct.Fstring, received_struct.Fstring);
     }
 
+#if EFL_BETA
     public static void event_with_struct_complex_payload()
     {
         var obj = new Dummy.TestObject();
@@ -191,6 +192,7 @@ class TestEoEvents
 
         Test.AssertEquals(sent_struct.Fobj, received_struct.Fobj);
     }
+#endif
 
     public static void event_with_array_payload()
     {
diff --git a/src/tests/efl_mono/StructHelpers.cs b/src/tests/efl_mono/StructHelpers.cs
index 4debea53f1..73554f2d21 100644
--- a/src/tests/efl_mono/StructHelpers.cs
+++ b/src/tests/efl_mono/StructHelpers.cs
@@ -120,6 +120,7 @@ internal class StructHelpers
         Test.Assert(simple.Fstringshare == null);
     }
 
+#if EFL_BETA
     internal static Dummy.StructComplex structComplexWithValues()
     {
         var complex = new Dummy.StructComplex();
@@ -211,7 +212,7 @@ internal class StructHelpers
 
         Test.Assert(complex.Fobj == null);
     }
-
+#endif
 
 }
 
diff --git a/src/tests/efl_mono/Structs.cs b/src/tests/efl_mono/Structs.cs
index 71246b3198..d632e7a4d7 100644
--- a/src/tests/efl_mono/Structs.cs
+++ b/src/tests/efl_mono/Structs.cs
@@ -20,11 +20,13 @@ internal class TestStructs
         checkZeroedStructSimple(simple);
     }
 
+#if EFL_BETA
     private static void complex_default_instantiation()
     {
         var complex = new Dummy.StructComplex();
         checkZeroedStructComplex(complex);
     }
+#endif
 
     public static void parameter_initialization()
     {
@@ -283,6 +285,7 @@ internal class TestStructs
     }
 
     // Complex Structs
+#if EFL_BETA
     public static void complex_in()
     {
         var complex = structComplexWithValues();
@@ -330,6 +333,7 @@ internal class TestStructs
     // public static void complex_ptr_return_own()
     // {
     // }
+#endif
 }
 
 }
diff --git a/src/tests/efl_mono/dummy_event_manager.eo b/src/tests/efl_mono/dummy_event_manager.eo
index 78b9dec8df..cd8cdfeef9 100644
--- a/src/tests/efl_mono/dummy_event_manager.eo
+++ b/src/tests/efl_mono/dummy_event_manager.eo
@@ -1,6 +1,6 @@
 import eina_types;
 
-class @beta Dummy.Event_Manager extends Efl.Object {
+class Dummy.Event_Manager extends Efl.Object {
 
    methods {
       @property emitter {
diff --git a/src/tests/efl_mono/dummy_part_holder.eo b/src/tests/efl_mono/dummy_part_holder.eo
index b95f1a5cdc..1ac88007fc 100644
--- a/src/tests/efl_mono/dummy_part_holder.eo
+++ b/src/tests/efl_mono/dummy_part_holder.eo
@@ -1,6 +1,6 @@
 import eina_types;
 
-class @beta Dummy.Part_Holder extends Dummy.Test_Object implements Efl.Part {
+class Dummy.Part_Holder extends Dummy.Test_Object implements Efl.Part {
 
    parts {
       one: Dummy.Test_Object; [[ Part number one. ]]
diff --git a/src/tests/efl_mono/dummy_test_object.eo b/src/tests/efl_mono/dummy_test_object.eo
index 22c9d69eb8..6aab6eda75 100644
--- a/src/tests/efl_mono/dummy_test_object.eo
+++ b/src/tests/efl_mono/dummy_test_object.eo
@@ -74,7 +74,7 @@ struct @free(free) Dummy.StructSimple
    fmyint: Dummy.MyInt;
 }
 
-struct @free(free) Dummy.StructComplex {
+struct @beta @free(free) Dummy.StructComplex {
    farray: array<ptr(int)>;
    flist: list<string>;
    fhash: hash<string, string>;
@@ -82,7 +82,7 @@ struct @free(free) Dummy.StructComplex {
    fany_value: any_value;
    fany_value_ptr: any_value_ptr;
    fbinbuf: ptr(Eina.Binbuf);
-   fslice: Eina.Slice;
+   fslice: slice<ubyte>;
    // fslice: ptr(Eina.Slice); // TODO
    fobj: Dummy.Numberwrapper;
 }
@@ -253,71 +253,71 @@ class Dummy.Test_Object extends Efl.Object implements Dummy.Test_Iface {
 
       eina_slice_in {
          params {
-            @in slice: Eina.Slice;
+            @in slice: slice<ubyte>;
          }
          return: bool;
       }
 
       eina_rw_slice_in {
          params {
-            @in slice: Eina.Rw_Slice;
+            @in slice: rw_slice<ubyte>;
          }
          return: bool;
       }
 
       eina_slice_out {
          params {
-            @out slice: Eina.Slice;
+            @out slice: slice<ubyte>;
          }
          return: bool;
       }
 
       eina_rw_slice_out {
          params {
-            @out slice: Eina.Rw_Slice;
+            @out slice: rw_slice<ubyte>;
          }
          return: bool;
       }
 
       eina_rw_slice_inout {
          params {
-            @inout slice: Eina.Rw_Slice;
+            @inout slice: rw_slice<ubyte>;
          }
          return: bool;
       }
 
       /*
       eina_slice_return {
-         return: Eina.Slice;
+         return: slice<ubyte>;
       }
 
       eina_rw_slice_return {
-         return: Eina.Rw_Slice;
+         return: rw_slice<ubyte>;
       }
       */
 
-      eina_binbuf_in {
+      eina_binbuf_in @beta {
          params {
             @in binbuf: ptr(Eina.Binbuf);
          }
          return: bool;
       }
 
-      call_eina_binbuf_in {
+      call_eina_binbuf_in @beta {
          params {
             @in binbuf: ptr(Eina.Binbuf);
          }
          return: bool;
       }
 
-      eina_binbuf_in_own {
+      eina_binbuf_in_own @beta {
          params {
             @in binbuf: ptr(Eina.Binbuf) @owned;
          }
          return: bool;
       }
 
-      call_eina_binbuf_in_own {
+      call_eina_binbuf_in_own @beta {
         params {
             @in str: ptr(Eina.Binbuf) @owned;
         }
@@ -328,14 +328,14 @@ class Dummy.Test_Object extends Efl.Object implements Dummy.Test_Iface {
          return: bool;
       }
 
-      eina_binbuf_out {
+      eina_binbuf_out @beta {
          params {
             @out binbuf: ptr(Eina.Binbuf);
          }
          return: bool;
       }
 
-      call_eina_binbuf_out {
+      call_eina_binbuf_out @beta {
          return: ptr(Eina.Binbuf);
       }
 
@@ -343,22 +343,22 @@ class Dummy.Test_Object extends Efl.Object implements Dummy.Test_Iface {
          return: bool;
       }
 
-      eina_binbuf_out_own {
+      eina_binbuf_out_own @beta {
          params {
             @out binbuf: ptr(Eina.Binbuf) @owned;
          }
          return: bool;
       }
 
-      call_eina_binbuf_out_own {
+      call_eina_binbuf_out_own @beta {
          return: ptr(Eina.Binbuf) @owned;
       }
 
-      eina_binbuf_return {
+      eina_binbuf_return @beta {
          return: ptr(Eina.Binbuf);
       }
 
-      call_eina_binbuf_return {
+      call_eina_binbuf_return @beta {
          return: ptr(Eina.Binbuf);
       }
 
@@ -366,11 +366,11 @@ class Dummy.Test_Object extends Efl.Object implements Dummy.Test_Iface {
          return: bool;
       }
 
-      eina_binbuf_return_own {
+      eina_binbuf_return_own @beta {
          return: ptr(Eina.Binbuf) @owned;
       }
 
-      call_eina_binbuf_return_own {
+      call_eina_binbuf_return_own @beta {
          return: ptr(Eina.Binbuf) @owned;
       }
 
@@ -1400,57 +1400,57 @@ class Dummy.Test_Object extends Efl.Object implements Dummy.Test_Iface {
          return: ptr(Dummy.StructSimple) @owned;
       }
 
-      struct_complex_in {
+      struct_complex_in @beta {
          params {
             @in complex: Dummy.StructComplex;
          }
          return: bool;
       }
 
-      struct_complex_ptr_in {
+      struct_complex_ptr_in @beta {
          params {
             @in complex: ptr(Dummy.StructComplex);
          }
          return: bool;
       }
 
-      struct_complex_ptr_in_own {
+      struct_complex_ptr_in_own @beta {
          params {
             @in complex: ptr(Dummy.StructComplex) @owned;
          }
          return: bool;
       }
 
-      struct_complex_out {
+      struct_complex_out @beta {
          params {
             @out complex: Dummy.StructComplex;
          }
          return: bool;
       }
 
-      // struct_complex_ptr_out {
+      // struct_complex_ptr_out @beta {
       //    params {
       //       @out complex: ptr(Dummy.StructComplex);
       //    }
       //    return: bool;
       // }
       //
-      // struct_complex_ptr_out_own {
+      // struct_complex_ptr_out_own @beta {
       //    params {
       //       @out complex: ptr(Dummy.StructComplex) @owned;
       //    }
       //    return: bool;
       // }
 
-      struct_complex_return {
+      struct_complex_return @beta {
          return: Dummy.StructComplex;
       }
 
-      // struct_complex_ptr_return {
+      // struct_complex_ptr_return @beta {
       //    return: ptr(Dummy.StructComplex);
       // }
       //
-      // struct_complex_ptr_return_own {
+      // struct_complex_ptr_return_own @beta {
       //    return: ptr(Dummy.StructComplex) @owned;
       // }
 
@@ -1502,7 +1502,7 @@ class Dummy.Test_Object extends Efl.Object implements Dummy.Test_Iface {
          }
       }
 
-      emit_event_with_struct_complex {
+      emit_event_with_struct_complex @beta {
          params {
             @in data: Dummy.StructComplex;
          }
@@ -1627,7 +1627,7 @@ class Dummy.Test_Object extends Efl.Object implements Dummy.Test_Iface {
       evt,with,obj @hot: Dummy.Test_Object;
       evt,with,error @hot: Eina.Error;
       evt,with,struct @hot: Dummy.StructSimple;
-      evt,with,struct,complex @hot: Dummy.StructComplex;
+      evt,with,struct,complex @beta @hot: Dummy.StructComplex;
       evt,with,array @hot: const(array<string>);
       evt_with,under @hot: void;