docs: public HalFormsTemplate andContentType(MediaType mediaType) {
  
  		Assert.notNull(mediaType, "Media type must not be null!");
  
  		List<MediaType> contentTypes = new ArrayList<>(this.contentTypes);
  		contentTypes.add(mediaType);
  
  		return new HalFormsTemplate(title, httpMethod, properties, contentTypes);
  	}