code: protected void skipLinesAlreadyRead(Iterator it) {
          long linesRead = getItemsRead();
          if (linesRead > 0) {
              for (long i = 0; i < linesRead; i++) {
                  if (it.hasNext()) {
                      it.next();
                  }
              }
          }
      }
docs: Skips the iterator ahead to the items read value stored in the execution context
  
  @param it any iterator