def nop(format_chained=True, chained=None, chained_status=None):
    """
    This function just returns the chained value. It is a nop/no operation.

    This can be useful if you want to do a pipe_on_true to filter out
    False values -- you can pipe_on_true to process.nop, and stick a
    returner on the nop operation to just return the True values.
    """
    return chained