public static <T> ParamWindowedValueCoder<T> getParamWindowedValueCoder(Coder<T> valueCoder) {
    return ParamWindowedValueCoder.of(valueCoder);
  }
@Test
  public void testParamWindowedValueCoderIsSerializableWithWellKnownCoderType() {
    CoderProperties.coderSerializable(
        WindowedValue.getParamWindowedValueCoder(GlobalWindow.Coder.INSTANCE));
  }