private static boolean needToUseBlockingTaskExecutor(Class<?> clazz, Method method) {
            return AnnotationUtil.findFirst(method, Blocking.class) != null ||
                   AnnotationUtil.findFirst(clazz, Blocking.class) != null;
        }
A registry of the implementation methods bound to a {@link GrpcService}. Used for method dispatch and
documentation generation.
grpc/src/main/java/com/linecorp/armeria/server/grpc/HandlerRegistry.java