Java 9 overrides the rewind, flip and other methods of Buffer in subclasses of Buffer such as ByteBuffer. The methods in these subclasses do not add @since 9 to javadoc.
I think this is an oversight, because this modification destroys some code. When compiling them with JDK 9+ and using the -target 8 option instead of -release 8, the generated class file crashes when running in Java 8. IDEs cannot detect this error because there is no @since document. Therefore, I think it is important to add @since to them, and they need to be back ported to Java 11/17.
