code: def _is_not_pickle_safe_gl_class(obj_class):
      
      gl_ds = [_SFrame, _SArray, _SGraph]
  
      # Object is GLC-DS or GLC-Model
      return (obj_class in gl_ds) or _is_not_pickle_safe_gl_model_class(obj_class)
docs: Check if class is a Turi create model.
  
      The function does it by checking the method resolution order (MRO) of the
      class and verifies that _Model is the base class.
  
      Parameters
      ----------
      obj_class    : Class to be checked.
  
      Returns
      ----------
      True if the class is a GLC Model.