@staticmethod
def blacklist(name, value, seq):
    """
        Implements the behavior of a blacklist by requesting a field be skipped
        whenever its name is found in the list of fields.

        :param name:
            The field name to inspect.
        :param value:
            The field's value.
        :param seq:
            The list of fields associated with the ``Role``.
        """
    if seq is not None and len(seq) > 0:
        return name in seq
    return False
