void function ( ) { stopping = true ; }
signal the harvester to stop . the harvester may not stop immediately , but should stop as soon as possible . concode_field_sep boolean stopping concode_field_sep String getOutputType concode_elem_sep void harvest concode_elem_sep void harvest concode_elem_sep boolean isStopping concode_elem_sep void fireStartHarvest concode_elem_sep void fireAbortHarvest concode_elem_sep void fireEndHarvest concode_elem_sep void fireProgress concode_elem_sep void progressEvent