def METHOD_NAME(*params):
    """ Decorator to create parameterized rules.
    Parameterized rule methods must be named starting with 'p_' and contain
    'xxx', and their docstrings may contain 'xxx' and 'yyy'. These will be
    replaced by the given parameter tuples. For example, ``p_xxx_rule()`` with
    docstring 'xxx_rule  : yyy' when decorated with
    ``@parameterized(('id', 'ID'))`` produces ``p_id_rule()`` with the docstring
    'id_rule  : ID'. Using multiple tuples produces multiple rules.
    """
    def decorate(rule_func):
        rule_func._params = params
        return rule_func
    return decorate