docs: def superclasses(self, inherited=False):
          """Iterate over the superclasses of the class.
  
          This function is the Python equivalent
          of the CLIPS class-superclasses command.
  
          """
          data = clips.data.DataObject(self._env)
  
          lib.EnvClassSuperclasses(
              self._env, self._cls, data.byref, int(inherited))
  
          for klass in classes(self._env, data.value):
              yield klass