question: public static void cleanUpFullCopyAssociations ( List < VolumeDescriptor > volumeDescriptors , DbClient dbClient ) { List < URI > volumeURIs = VolumeDescriptor . getVolumeURIs ( volumeDescriptors ) ; for ( URI volumeURI : volumeURIs ) { Volume volume = dbClient . queryObject ( Volume . class , volumeURI ) ; URI sourceVolumeURI = volume . getAssociatedSourceVolume ( ) ; if ( ! NullColumnValueGetter . isNullURI ( sourceVolumeURI ) ) { Volume sourceVolume = dbClient . queryObject ( Volume . class , sourceVolumeURI ) ; if ( sourceVolume != null ) { StringSet fullCopyIds = sourceVolume . getFullCopies ( ) ; if ( fullCopyIds . contains ( volumeURI . toString ( ) ) ) { fullCopyIds . remove ( volumeURI . toString ( ) ) ; dbClient . updateObject ( sourceVolume ) ; } } } } }
target:  For ViPR-Only delete, cleans up the full copy associations between source and full copy volumes.