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    Check collection for null (#4763)

    frostbyte_neo 发布于 2020-09-28 13:39:59 +00:00 | 2788 次提交 在此版本后已推送到 master

    In OptionChainUniverseDataCollectionEnumerator.IsValid we check the underlying
    foir null and ensure that there are data points but we forget to check the actual
    collection object for null, which it is initialized to. The collection remains
    null in the case where no data is found.

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