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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 _represent_undefined(self, data):
 """Raises flag for objects that cannot be represented"""

    raise RepresenterError(
        _format("Cannot represent an object: {0!A} of type: {1}; "
                "yaml_representers: {2!A}, "
                "yaml_multi_representers: {3!A}",
                data, type(data), self.yaml_representers.keys(),
                self.yaml_multi_representers.keys()))