10.5.13 AliasDef

   An AliasDef represents an OMG IDL typedef that aliases another definition.

   module CORBA { interface AliasDef : TypedefDef { attribute IDLType original_type_def; }; };

   10.5.13.1 Read Interface

   The original_type_def attribute identifies the type being aliased.

   The inherited type attribute is a tk_alias TypeCode describing the alias.

   10.5.13.2 Write Interface

   Setting the original_type_def attribute also updates the type attribute.