How to Disable streaming with .streamEvent method for a particular node

[Valentine340]

I have seen "nostream" used in an example code using .stream method. How do you apply that in streamEvent method?
here is my grapgh:
const graphBuilder = new StateGraph(GraphStateWithToken)
// Main nodes
.addNode("analyzeQuery", handleInitialQuery)
.addNode("fetchTicketHistory", getTicketHistory)
.addNode("generateSupportResponse", createResponse)
.addNode("escalationHandler", handleEscalation)
.addNode("knowledgeSearch", searchKnowledge)
.addNode("priorityCheck", assessPriority)

// Start flow
.addEdge("__start__", "analyzeQuery")

// Route based on query analysis
.addConditionalEdges("analyzeQuery", queryTypeCondition, {
    __end__: "__end__",
    needsHistory: "fetchTicketHistory",
})

// Check ticket history
.addEdge("fetchTicketHistory", "priorityCheck")

here is the example code found on https://langchain-ai.github.io/langgraphjs/how-tos/stream-tokens/#the-stream-method

`import { RunnableLambda } from "@langchain/core/runnables";

const unstreamed = async (_: typeof StateAnnotation.State) => {
const model = new ChatOpenAI({
model: "gpt-4o-mini",
temperature: 0,
});
const res = await model.invoke("How are you?");
console.log("LOGGED UNSTREAMED MESSAGE", res.content);
// Don't update the state, this is just to show a call that won't be streamed
return {};
}

const agentWithNoStream = new StateGraph(StateAnnotation)
.addNode("unstreamed",
// Add a "nostream" tag to the entire node
RunnableLambda.from(unstreamed).withConfig({
tags: ["nostream"]
})
)
.addNode("agent", callModel)
.addNode("tools", toolNode)
// Run the unstreamed node before the agent
.addEdge("start", "unstreamed")
.addEdge("unstreamed", "agent")
.addConditionalEdges("agent", routeMessage)
.addEdge("tools", "agent")
.compile();

const stream = await agentWithNoStream.stream(
{ messages: [{ role: "user", content: "What's the current weather in Nepal?" }] },
{ streamMode: "messages" },
);

for await (const [message, _metadata] of stream) {
if (isAIMessageChunk(message) && message.tool_call_chunks?.length) {
console.log(${message.getType()} MESSAGE TOOL CALL CHUNK: ${message.tool_call_chunks[0].args});
} else {
console.log(${message.getType()} MESSAGE CONTENT: ${message.content});
}
}`