code: TypeConverter getDeclaredTypeConverter(String typeConverterClassName1, String typeConverterClassName2) {
          String typeConverterClass = typeConverterClassName1;
          if (MappedBy.DefaultTypeConverter.class.getName().equals(typeConverterClass)) {
              typeConverterClass = typeConverterClassName2;
          }
          if (!MappedBy.DEFAULT_TYPE_CONVERTER.equals(typeConverterClass)) {
              TypeConverter typeConverter = typeConverterInstances.get(typeConverterClass);
              if (null == typeConverter) {
                  try {
                      typeConverter = reflectionHelper.newInstance(typeConverterClass);
                      typeConverterInstances.put(typeConverterClass, typeConverter);
                  } catch (ClassNotFoundException cnfe) {
                      throw new JTransfoException(DECLARED_TYPE_CONVERTER_CLASS + typeConverterClass +
                              " cannot be found.", cnfe);
                  } catch (InstantiationException ie) {
                      throw new JTransfoException(DECLARED_TYPE_CONVERTER_CLASS + typeConverterClass +
                              " cannot be instantiated.", ie);
                  } catch (IllegalAccessException iae) {
                      throw new JTransfoException(DECLARED_TYPE_CONVERTER_CLASS + typeConverterClass +
                              " cannot be accessed.", iae);
                  } catch (ClassCastException cce) {
                      throw new JTransfoException(DECLARED_TYPE_CONVERTER_CLASS + typeConverterClass +
                              " cannot be cast to a TypeConverter.", cce);
                  }
              }
              return typeConverter;
          }
          return null;
      }
docs: Get the {@link TypeConverter} which was specified in the {@link MappedBy} annotation (if any).
  
  @param typeConverterClassName1 highest priority type converter name (from class in annotation)
  @param typeConverterClassName2  second highest priority type converter name (FQN)
  @return type converter with highest precedence