The UUID (Binary subtype 4) of the collection that the operation was performed on.对其执行操作的集合的UUID（二进制子类型4）。
Only present when the showExpandedEvents flag is enabled.仅当启用showExpandedEvents标志时才显示。
showExpandedEvents
NOTE: collectionUUID will be converted to a NodeJS Buffer if the promoteBuffers flag is enabled.如果启用promoteBuffers标志，collectionUUID将转换为NodeJS缓冲区。
6.1.0
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The UUID (Binary subtype 4) of the collection that the operation was performed on.对其执行操作的集合的UUID（二进制子类型4）。Only present when the仅当启用showExpandedEventsflag is enabled.showExpandedEvents标志时才显示。NOTE:
collectionUUID will be converted to a NodeJS Buffer if the promoteBuffers flag is enabled.如果启用promoteBuffers标志，collectionUUID将转换为NodeJS缓冲区。6.1.0