@Override
    public <T> GrpcClientBuilder option(ClientOptionValue<T> optionValue) {
        return (GrpcClientBuilder) super.option(optionValue);
    }
Returns a newly-created gRPC client which implements the specified {@code clientType}, based on the
properties of this builder.
grpc/src/main/java/com/linecorp/armeria/client/grpc/GrpcClientBuilder.java