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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def stop(self, message: str = None, silent: bool = False):
 """ Stops the execution of the project at the current step immediately without raising an error. Use this to abort running the project in situations where some critical branching action should prevent the project from continuing to run. :param message: A custom display message to include in the display for the stop action. This message is ignored if silent is set to True. :param silent: When True nothing will be shown in the notebook display when the step is stopped. When False, the notebook display will include information relating to the stopped action. """

        me = self.get_internal_project()
        if not me or not me.current_step:
            return

        if not silent:
            render_stop_display(me.current_step, message)
        raise UserAbortError(halt=True)