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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def validate_exported_interfaces(object_class, exported_intfs):
 # type: (List[str], List[str]) -> bool """ Validates that the exported interfaces are all provided by the service :param object_class: The specifications of a service :param exported_intfs: The exported specifications :return: True if the exported specifications are all provided by the service """

    if (
        not exported_intfs
        or not isinstance(exported_intfs, list)
        or not exported_intfs
    ):
        return False
    else:
        for exintf in exported_intfs:
            if exintf not in object_class:
                return False
    return True