(cls, obj)
This method should return the unique identifier of the given object.
This method should return the unique identifier of the given object.
This method should return the unique identifier of the given object .
def get_obj_id(cls, obj):
        """
        This method should return the unique identifier of the given object.
        """
        raise NotImplementedError("Please implement this method.")
def get_obj_id ( cls , obj ) : raise NotImplementedError ( "Please implement this method." )