Generates the names of all output tensors of an operation.

    Args:
      operation_name: a string, the name of an operation in the graph.

    Yields:
      a string, the name of an output tensor.

def get_operation_output_names(self, operation_name):
    """Generates the names of all output tensors of an operation.

    Args:
      operation_name: a string, the name of an operation in the graph.

    Yields:
      a string, the name of an output tensor.
    """
    for output_tensor in self._name_to_operation(operation_name).outputs:
      yield output_tensor.name