question: private Uid executePatchOperations ( ConnectorFacade facade , OperationOptions operationOptions , Multimap < String , Attribute > operations , Uid uid ) throws IOException , ResourceException { Set < String > keys = operations . keySet ( ) ; for ( String key : keys ) { Set < Attribute > attrs = ImmutableSet . copyOf ( operations . get ( key ) ) ; if ( attrs . size ( ) > 0 ) { switch ( key ) { case PatchOperation . OPERATION_ADD : uid = facade . addAttributeValues ( objectClassInfoHelper . getObjectClass ( ) , uid , AttributeUtil . filterUid ( attrs ) , operationOptions ) ; break ; case PatchOperation . OPERATION_REMOVE : try { uid = facade . removeAttributeValues ( objectClassInfoHelper . getObjectClass ( ) , uid , AttributeUtil . filterUid ( attrs ) , operationOptions ) ; } catch ( ConnectorException e ) { logger . debug ( "Error removing attribute values for object {}" , uid , e ) ; } break ; case PatchOperation . OPERATION_REPLACE : default : uid = facade . update ( objectClassInfoHelper . getObjectClass ( ) , uid , AttributeUtil . filterUid ( attrs ) , operationOptions ) ; } } } return uid ; }
target:  Execute ADD, REMOVE, REPLACE operations against a Set of Attributes