code: public int length() {
          if (tc.isEntryEnabled())
              SibTr.entry(tc, "length");
          if (tc.isDebugEnabled())
              SibTr.debug(tc, "rc=", elements);
          if (tc.isEntryEnabled())
              SibTr.exit(tc, "length");
  
          return elements;
      }
docs: Returns the number of elements in the array
  
  @return int