https://docs.ros.org/en/latest/api/roscpp/html/classros_1_1CallbackInterface.html
roscpp: ros::CallbackInterface Class Reference
rosclassreference
https://docs.oracle.com/middleware/1213/wls/WLAPI/weblogic/wsee/jws/CallbackInterface.html
CallbackInterface (Java API Reference for Oracle WebLogic Server)
java apioracle weblogicreferenceserver