If they are not required by the Membership provider, no exception is thrown if they are not found, and if they are of the wrong type they are ignored.

如果成员资格提供程序不需要它们，即使找不到它们也不会引发异常，如果它们的类型错误，则它们将被忽略。

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If they are not required by the Membership provider, no exception is thrown if they are not found, and if they are of the wrong type they are ignored.

如果成员资格提供程序不需要它们，即使找不到它们也不会引发异常，如果它们的类型错误，则它们将被忽略。

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