@SuppressWarnings("MustBeClosedChecker")
    @Override
    public SafeCloseable updateThreadContext(CoroutineContext coroutineContext) {
        return requestContext.push();
    }
Propagates {@link ServiceRequestContext} over Kotlin coroutines only when using
<a href="https://github.com/grpc/grpc-kotlin">gRPC-Kotlin</a>.
grpc/src/main/java/com/linecorp/armeria/server/grpc/ArmeriaRequestCoroutineContext.java