question: public boolean zoneExportRemoveVolumes ( List < NetworkZoningParam > zoningParams , Collection < URI > volumeURIs , String stepId ) { NetworkZoningParam zoningParam = zoningParams . get ( 0 ) ; _log . info ( String . format ( "Entering zoneExportRemoveVolumes for ExportGroup: %s Volumes: %s" , zoningParam . getExportGroupDisplay ( ) , volumeURIs . toString ( ) ) ) ; return doZoneExportMasksDelete ( zoningParams , volumeURIs , stepId ) ; }
target:  Removes the indicated volumes from the zones given by the zoning parameters. If the FCZoneReferences for a zone are all removed (and there are no existing volumes in the associated export mask), the zones will be removed from switch.