code: @Override
      public Set<String> getSupportedInputMediaTypes() {
          ImmutableSet.Builder<String> result = ImmutableSet.builder();
          result.addAll(MediaType.NATIVE_MEDIATYPE_SYNTAX_MAP.keySet());
          result.addAll(this.serviceTransformationEngine.getSupportedMediaTypes());
          return result.build();
      }
docs: Obtains the list of supported media types the engine can import
  
  @return the Set of media types