'ParametricGeometry': () = {
BBC/ Alex Osborne
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The new API has complete parallel sync versions: Stream.pullSync(), Stream.bytesSync(), Stream.textSync(), and so on. If your source and transforms are all synchronous, you can process the entire pipeline without a single promise.
（三）为实施考试作弊行为，向他人非法出售、提供考试试题、答案的；