Helper function to do operation on sets.

    Checks for any missing required parameters.
    Returns non-empty or empty list. With empty
    list being False.

    ::returns list

def _missing_required_parameters(rqset, **kwargs):
    """Helper function to do operation on sets.

    Checks for any missing required parameters.
    Returns non-empty or empty list. With empty
    list being False.

    ::returns list
    """
    key_set = set(list(iterkeys(kwargs)))
    required_minus_received = rqset - key_set
    if required_minus_received != set():
        return list(required_minus_received)