@staticmethod
def team_key(identifier):
    """
        Take raw team number or string key and return string key.

        Used by all team-related methods to support either an integer team number or team key being passed.

        (We recommend passing an integer, just because it's cleaner. But whatever works.)

        :param identifier: int team number or str 'frc####'
        :return: string team key in format 'frc####'
        """
    return identifier if type(identifier) == str else 'frc%s' % identifier
