@Override
    public void produceContent(ContentEncoder encoder, IOControl ioControl) throws IOException {
        httpAsyncRequestProducer.produceContent(encoder, ioControl);
    }
@Test
    public void produceContent() throws IOException {
        final HttpAsyncRequestProducer delegate = Mockito.mock(HttpAsyncRequestProducer.class);
        final HttpAsyncRequestProducerDecorator decorator = new HttpAsyncRequestProducerDecorator(
                delegate, null, null);
        decorator.produceContent(null, null);
        Mockito.verify(delegate, Mockito.times(1)).produceContent(null, null);
    }