def get_return_arg(member):
    """Get the return argument/structure for this member."""
    outputs = member.output_arg_info.args
    # This should be true even if there are multiple outputs.
    # The outputs are all combined into a single struture.
    assert(len(outputs) <= 1)
    arg = None

    if len(outputs) > 0:
        arg = outputs[0]

    return arg