question: private Map < String , Volume > groupVolumesByReplicationGroup ( List < Volume > volumeList ) { Map < String , Volume > repGroupToVolumeMap = new HashMap < String , Volume > ( ) ; for ( Volume volume : volumeList ) { String repGroupName = volume . getReplicationGroupInstance ( ) ; if ( volume . isVPlexVolume ( _dbClient ) ) { Volume backedVol = VPlexUtil . getVPLEXBackendVolume ( volume , true , _dbClient ) ; if ( backedVol != null ) { repGroupName = backedVol . getReplicationGroupInstance ( ) ; } } repGroupToVolumeMap . put ( repGroupName , volume ) ; } return repGroupToVolumeMap ; }
target:  Returns a map of replication group name to one of the volumes in the group.