code: def is_of_genus_type(self, genus_type=None):
          
          if genus_type is None:
              raise NullArgument()
          else:
              my_genus_type = self.get_genus_type()
              return (genus_type.get_authority() == my_genus_type.get_authority() and
                      genus_type.get_identifier_namespace() == my_genus_type.get_identifier_namespace() and
                      genus_type.get_identifier() == my_genus_type.get_identifier())
docs: Tests if this object is of the given genus Type.
  
          The given genus type may be supported by the object through the
          type hierarchy.
  
          | arg:    ``genus_type`` (``osid.type.Type``): a genus type
          | return: (``boolean``) - true if this object is of the given genus
                  Type,  false otherwise
          | raise:  ``NullArgument`` - ``genus_type`` is null
          | *compliance: mandatory - This method must be implemented.*