    def __init__(self, regexes: List[Tuple[str, Regularizer]] = None) -> None:
        """
        # Parameters

        regexes : `List[Tuple[str, Regularizer]]`, optional (default = `None`)
            A sequence of pairs (regex, Regularizer), where each Regularizer
            applies to the parameters its regex matches (and that haven't previously
            been matched).
        """
        self._regularizers = regexes or []
# Parameters

regexes : `List[Tuple[str, Regularizer]]`, optional (default = `None`)
A sequence of pairs (regex, Regularizer), where each Regularizer
applies to the parameters its regex matches (and that haven't previously
been matched).
allennlp/nn/regularizers/regularizer_applicator.py