public Method getDeclaredMethod(SofaRequest sofaRequest, Request request, String callType) {
        String uniqueName = this.getServiceUniqueName(sofaRequest);
        List<String> argTypesList = request.getArgTypesList();
        if (RpcConstants.INVOKER_TYPE_SERVER_STREAMING.equals(callType)) {
            List<String> a = new ArrayList<>(argTypesList.size() + 1);
            a.addAll(argTypesList);
            a.add(SofaStreamObserver.class.getCanonicalName());
            argTypesList = a;
        }
        return ReflectCache.getOverloadMethodCache(uniqueName, sofaRequest.getMethodName(), argTypesList.toArray(new String[0]));
    }
get unique id from rpc invoke context

@return unique id from rpc invoke context
remoting/remoting-triple/src/main/java/com/alipay/sofa/rpc/server/triple/UniqueIdInvoker.java