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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_output_info_dict(self, signature=None):
 """Describes the outputs provided by a signature. Args: signature: A string with the signature to get ouputs information for. If None, the default signature is used if defined. Returns: The result of ModuleSpec.get_output_info_dict() for the given signature, and the graph variant selected by `tags` when this Module was initialized. Raises: KeyError: if there is no such signature. """

    return self._spec.get_output_info_dict(signature=signature, tags=self._tags)