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