question: public synchronized boolean isNewerThanOrCanFillExceptionsFor ( RegionVersionHolder < T > source ) { if ( source == null || getVersion ( ) > source . getVersion ( ) ) { return true ; } RegionVersionHolder < T > other = source . clone ( ) ; mergeBitSet ( ) ; other . mergeBitSet ( ) ; List < RVVException > mine = canonicalExceptions ( this . exceptions ) ; Iterator < RVVException > myIterator = mine . iterator ( ) ; List < RVVException > his = canonicalExceptions ( other . exceptions ) ; Iterator < RVVException > otherIterator = his . iterator ( ) ; RVVException myException = myIterator . hasNext ( ) ? myIterator . next ( ) : null ; RVVException otherException = otherIterator . hasNext ( ) ? otherIterator . next ( ) : null ; while ( ( otherException != null && otherException . previousVersion > this . version ) || isSpecialException ( otherException , other ) ) { otherException = otherIterator . hasNext ( ) ? otherIterator . next ( ) : null ; } while ( otherException != null ) { if ( myException == null ) { return true ; } if ( isSpecialException ( myException , this ) ) { myException = myIterator . hasNext ( ) ? myIterator . next ( ) : null ; continue ; } if ( isSpecialException ( otherException , other ) ) { otherException = otherIterator . hasNext ( ) ? otherIterator . next ( ) : null ; continue ; } if ( myException . previousVersion >= otherException . nextVersion ) { myException = myIterator . hasNext ( ) ? myIterator . next ( ) : null ; continue ; } if ( otherException . previousVersion >= myException . nextVersion ) { return true ; } if ( ( myException . previousVersion == otherException . previousVersion ) && ( myException . nextVersion == otherException . nextVersion ) ) { myException = myIterator . hasNext ( ) ? myIterator . next ( ) : null ; otherException = otherIterator . hasNext ( ) ? otherIterator . next ( ) : null ; continue ; } if ( ( otherException . previousVersion < myException . previousVersion ) || ( myException . nextVersion < otherException . nextVersion ) ) { return true ; } otherException = otherIterator . hasNext ( ) ? otherIterator . next ( ) : null ; } return false ; }
target:  returns true if this holder has seen versions that the other holder hasn't 