def is_valid_urn(inurn):
    return is_valid_urn_string(inurn) and inurn.startswith(publicid_urn_prefix)
REST Transfer Live Call Helper
dataset/ETHPy150Open fp7-ofelia/ocf/ofam/src/src/ext/geni/util/urn_util.py/is_valid_urn--crossover with--dataset/ETHPy150Open plivo/plivohelper-python/plivohelper.py/REST.transfer_call