code: static String responseToHtml(ApiResponse response) {
  		StringBuilder sb = new StringBuilder();
  		sb.append("<head>\n");
  		sb.append("</head>\n");
  		sb.append("<body>\n");
  		response.toHTML(sb);
  		sb.append("</body>\n");
  		return sb.toString();
  	}
docs: Gets the HTML representation of the given API {@code response}.
  <p>
  An empty HTML head with the HTML body containing the API response (as given by {@link ApiResponse#toHTML(StringBuilder)}.
  
  @param response the API response, must not be {@code null}.
  @return the HTML representation of the given response.