question: private static Method findMethod ( Object instance , String name , Class < ? > ... parameterTypes ) throws NoSuchMethodException { for ( Class < ? > clazz = instance . getClass ( ) ; clazz != null ; clazz = clazz . getSuperclass ( ) ) { try { Method method = clazz . getDeclaredMethod ( name , parameterTypes ) ; if ( ! method . isAccessible ( ) ) { method . setAccessible ( true ) ; } return method ; } catch ( NoSuchMethodException e ) { } } throw new NoSuchMethodException ( "Method " + name + " with parameters " + Arrays . asList ( parameterTypes ) + " not found in " + instance . getClass ( ) ) ; }
target:  Locates a given method anywhere in the class inheritance hierarchy.