@AfterEach
    void clearCtxCapture() {
        ctxCapture.set(null);
    }
Interop test based on grpc-interop-testing. Should provide reasonable confidence in Armeria's
handling of the gRPC protocol.
it/server/src/test/java/com/linecorp/armeria/server/grpc/interop/ArmeriaGrpcServerInteropTest.java