docs: @Override
      public InputPreProcessor getInputPreprocessor(InputType... inputType) throws InvalidKerasConfigurationException {
          if (inputType.length > 1)
              throw new InvalidKerasConfigurationException(
                      "Keras SimpleRnn layer accepts only one input (received " + inputType.length + ")");
  
          return InputTypeUtil.getPreprocessorForInputTypeRnnLayers(inputType[0], layerName);
      }