@Override
            public void configure(ServerBuilder sb) throws Exception {
                ServerExtension.this.configure(sb);
                sb.decorator(contextCaptor.newDecorator(ServerExtension.this::shouldCapture));
            }
Creates a new instance.

@param autoStart {@code true} if the {@link Server} should start automatically.
                 {@code false} if the {@link Server} should start when a user calls {@link #start()}.
junit5/src/main/java/com/linecorp/armeria/testing/junit5/server/ServerExtension.java