code: def _handle_actiondefinefunction(self, _):
          
          obj = _make_object("ActionDefineFunction")
          obj.FunctionName = self._get_struct_string()
          obj.NumParams = unpack_ui16(self._src)
          for i in range(1, obj.NumParams + 1):
              setattr(obj, "param" + str(i), self._get_struct_string())
          obj.CodeSize = unpack_ui16(self._src)
          yield obj
docs: Handle the ActionDefineFunction action.