code: public static ServiceOffered LTI2ToolProxySettings(String endpoint) {
  		ServiceOffered ret = new ServiceOffered();
  		ret.setEndpoint(endpoint);
  		ret.set_id("tcp:ToolProxySettings");    
  		ret.set_type("RestService");
  		ret.setFormat(Arrays.asList(TOOLSETTINGS_FORMAT, TOOLSETTINGS_SIMPLE_FORMAT));
  		ret.setAction(Arrays.asList("GET", "PUT"));
  		return ret;
      }
docs: "endpoint" : "http://lms.example.com/resources/ToolProxy/{tool_proxy_guid}/custom",