question: retrieves diagnostics information preserved in the history file concode_field_sep Iterable<String> NODIAGS_LIST concode_elem_sep String NODIAGS concode_elem_sep JobUnsuccessfulCompletion datum concode_field_sep int getFinishedReduces concode_elem_sep EventType getEventType concode_elem_sep Object getDatum concode_elem_sep JobID getJobId concode_elem_sep long getFinishTime concode_elem_sep void setDatum concode_elem_sep int getFinishedMaps concode_elem_sep String getStatus
target: String function ( ) { final CharSequence loc0 = datum . getDiagnostics ( ) ; return loc0 == null ? NODIAGS : loc0 . toString ( ) ; }