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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 delete_metadata(self, resource, keys):
 """ Deletes the given key-value pairs associated with the given resource. Will attempt to delete all key-value pairs even if some fail. Args: resource (intern.resource.boss.BossResource) keys (list) Raises: HTTPErrorList on failure. """

        self.metadata_service.set_auth(self._token_metadata)
        self.metadata_service.delete(resource, keys)