SyncerViewChanged returns true if the syncer view fields changed between old and new for at least one of the SyncTargets on which the resource is synced.

FilteredSyncerViewsChanged returns true if the syncer view fields changed between old and new for at least one of the SyncTarget filtered by the [keepSynctarget] function.

NewDefaultSyncerViewManager creates a [SyncerViewRetriever] based on the default transfomation and summarizing rules providers.

NewSyncerViewRetriever creates a [SyncerViewRetriever] based on a given [transformations.TransformationProvider] and a given [transformations.SummarizingRulesProvider].

SyncerViewChanged returns true if the syncer view fields changed between old and new for the given SyncTarget.

UpstreamViewChanged check equality between old and new, ignoring the syncer view annotations.

SyncerViewRetriever allows retrieving the syncer views on an upstream object.