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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 get_graphs(self, run_key, debug=False):
 """Get the runtime GraphDef protos associated with a run key. Args: run_key: A Session.run kay. debug: Whether the debugger-decoratedgraph is to be retrieved. Returns: A `dict` mapping device name to `GraphDef` protos. """

    graph_dict = (self._run_key_to_debug_graphs if debug else
                  self._run_key_to_original_graphs)
    graph_wrappers = graph_dict.get(run_key, {})
    graph_defs = dict()
    for device_name, wrapper in graph_wrappers.items():
      graph_defs[device_name] = wrapper.graph_def
    return graph_defs