code: public DefaultValueProcessor findDefaultValueProcessor( Class target ) {
        if( !defaultValueMap.isEmpty() ) {
           Object key = defaultValueProcessorMatcher.getMatch( target, defaultValueMap.keySet() );
           DefaultValueProcessor processor = (DefaultValueProcessor) defaultValueMap.get( key );
           if( processor != null ) {
              return processor;
           }
        }
        return DEFAULT_VALUE_PROCESSOR;
     }
docs: Finds a DefaultValueProcessor registered to the target class.<br>
  Returns null if none is registered.<br>
  [Java -&gt; JSON]
  
  @param target a class used for searching a DefaultValueProcessor.