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tensorstore::kvstore::ReadGenerationConditions::if_not_equal
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    #include "tensorstore/kvstore/operations.h"
    StorageGeneration
    tensorstore::kvstore::ReadGenerationConditions::if_not_equal;

    The read is aborted if the generation associated with the stored key matches if_not_equal. The special values of StorageGeneration::Unknown() (the default) or StorageGeneration::NoValue() disable this condition.

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