private void assertCompleted(final Future<SomeType> request) {
        assertFutureEquals(SOME_TYPE, request, A_BIT_TIME, MILLISECONDS);
    }
Tests for {@link GrpcServerLifecycle}'s shutdown behavior using an in-process server/channel.
tests/src/test/java/net/devh/boot/grpc/test/shutdown/GrpcServerLifecycleWithCallsTest.java