constructor(method, requestHeaders, request, headers, response, status, trailers) {
        this.method = method;
        this.requestHeaders = requestHeaders;
        this.requests = request;
        this.headers = headers;
        this.response = response;
        this.status = status;
        this.trailers = trailers;
    }
A client streaming RPC call. This means that the clients sends 0, 1, or
more messages to the server, and the server replies with exactly one
message.