def get_verified_number(self, phone=None):
        from corehq.apps.sms.util import strip_plus
        verified = self.get_verified_numbers(True)
        if not phone:
            # for backwards compatibility with code that assumes only one verified phone #
            if len(verified) > 0:
                return sorted(verified.iteritems())[0][1]
            else:
                return None

        return verified.get(strip_plus(phone))
Traces all routing connections from each headwater to the outlet.
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/sms/mixin.py/CommCareMobileContactMixin.get_verified_number--crossover with--dataset/ETHPy150Open modflowpy/flopy/flopy/modflow/mfsfr2.py/ModflowSfr2.get_outlets