question: @ Override public TaskList createFileSystems ( FileSystemParam param , Project project , VirtualArray varray , VirtualPool vpool , TenantOrg tenantOrg , DataObject . Flag [ ] flags , List < Recommendation > recommendations , TaskList taskList , String taskId , VirtualPoolCapabilityValuesWrapper vpoolCapabilities ) throws InternalException { List < FileShare > fileList = null ; List < FileShare > fileShares = new ArrayList < FileShare > ( ) ; fileList = prepareFileSystems ( param , taskId , taskList , project , tenantOrg , flags , varray , vpool , recommendations , vpoolCapabilities , false ) ; fileShares . addAll ( fileList ) ; String suggestedNativeFsId = param . getFsId ( ) == null ? "" : param . getFsId ( ) ; final List < FileDescriptor > fileDescriptors = prepareFileDescriptors ( fileShares , vpoolCapabilities , suggestedNativeFsId ) ; final FileOrchestrationController controller = getController ( FileOrchestrationController . class , FileOrchestrationController . FILE_ORCHESTRATION_DEVICE ) ; try { controller . createFileSystems ( fileDescriptors , taskId ) ; } catch ( InternalException e ) { _log . error ( "Controller error when creating mirror filesystems" , e ) ; failFileShareCreateRequest ( taskId , taskList , fileShares , e . getMessage ( ) ) ; throw e ; } catch ( Exception e ) { _log . error ( "Controller error when creating mirror filesystems" , e ) ; failFileShareCreateRequest ( taskId , taskList , fileShares , e . getMessage ( ) ) ; throw e ; } return taskList ; }
target:  It take mirror recommendation and then creates source and mirror fileshare