Writing scalable server applications in the Java™ programming language has always been difficult. Before the advent of the Java New I/O API (NIO), thread management issues made it impossible for a server to scale to thousands of users. The Grizzly NIO framework has been designed to help developers to take advantage of the Java™ NIO API.
https://github.com/javaee/grizzly/blob/1959f98531bcf5380c3a78f3c55723d0a0c391b6/modules/http2/src/test/java/org/glassfish/grizzly/http2/HttpOutputStreamsTest.java#L1074-L1079
I think method could be removed or annotated (and executed).