code: int getChoiceField(int accessor) {
      int result = 0;
      try {
        if (jmfPart.isPresent(accessor))
          result = jmfPart.getInt(accessor);
      } catch (JMFException e) {
        FFDCFilter.processException(e, "getChoiceField", "185", this);
        if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) SibTr.debug(this, tc, "getChoiceField failed: " + e);
      }
      return result;
    }
docs: Get a choice field which determines which variant is set