docs: private static void violation(JMFType from, JMFType to) throws JMFSchemaViolationException {
      if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) JmfTr.debug(tc, "Violation:"
                                               + "  from = " + from.getFeatureName() + " : " + from
                                               + ", to = " + to.getFeatureName() + " : " + to
                                               );
      throw new JMFSchemaViolationException(from.getFeatureName() + " not compatible with " + to.getFeatureName());
    }