question: public boolean isValidCurrent ( long checkTime ) { if ( checkTime == 0 || ( rDateList == null && rRulesList == null ) ) { return false ; } boolean found = false ; Iterator < RecurrenceRule > rulesIterator = getRecurrenceRuleIterator ( ) ; while ( rulesIterator . hasNext ( ) ) { RecurrenceRule rule = rulesIterator . next ( ) ; long currentTime = rule . validCurrent ( getStartTime ( ) , checkTime , getCurrentCount ( ) ) ; currentTime = checkDateList ( rDateList , currentTime , checkTime ) ; if ( ( currentTime > 0 ) && isValid ( checkTime ) ) { found = true ; } else { return false ; } } return found ; }
target:  Checks the current recurrence validity for checkTime. 