GenerationUnchangedOnUpdatePredicate implements a default update predicate function on Generation unchanged.

GenerationUnchangedPredicate implements a default update predicate function on Generation unchanged.

IgnoreAllPredicate implements a default update predicate function to ignore all events.

IgnoreBackups implements a default create predicate function to ignore all create events triggered by backup tools.

NewObjectsPredicate implements a default update predicate function on Generation unchanged.