class Example.Square (Example.Rectangle) {
   [[A square shape object]]
   eo_prefix: example_square;
   methods {
      @property side {
         [[The length of both sides of this square]]
         set {
         }
         get {
         }
         values {
            size: int; [[Square side length]]
         }
      }
   }
   implements {
      class.constructor;
      class.destructor;
      Example.Shape.area;
      Example.Rectangle.width {get; set;}
      Example.Rectangle.height {get; set;}
   }
}