def validate_positive_integer_or_none(option, value):
    if value is None:
        return value
    return validate_positive_integer(option, value)
Testing the GET groups/<id>/ API with invite-only
dataset/ETHPy150Open mongodb/mongo-python-driver/pymongo/common.py/validate_positive_integer_or_none--crossover with--dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/webapi/tests/test_review_group.py/ResourceItemTests.test_get_invite_only