Why is initializeAgentExecutorWithOptions an async function?

[hae-yoon-cha-ck]

if you look here:

langchainjs/langchain/src/agents/initialize.ts

Lines 101 to 129 in fad95e4

	/**
	* Initialize an agent executor with options
	* @param tools Array of tools to use in the agent
	* @param llm LLM or ChatModel to use in the agent
	* @param options Options for the agent, including agentType, agentArgs, and other options for AgentExecutor.fromAgentAndTools
	* @returns AgentExecutor
	*/
	export async function initializeAgentExecutorWithOptions(
	tools: StructuredTool[],
	llm: BaseLanguageModel,
	options: InitializeAgentExecutorOptionsStructured
	): Promise<AgentExecutor>;
	export async function initializeAgentExecutorWithOptions(
	tools: Tool[],
	llm: BaseLanguageModel,
	options?: InitializeAgentExecutorOptions
	): Promise<AgentExecutor>;
	export async function initializeAgentExecutorWithOptions(
	tools: StructuredTool[] | Tool[],
	llm: BaseLanguageModel,
	options:
	| InitializeAgentExecutorOptions
	| InitializeAgentExecutorOptionsStructured = {
	agentType:
	llm._modelType() === "base_chat_model"
	? "chat-zero-shot-react-description"
	: "zero-shot-react-description",
	}
	): Promise<AgentExecutor> {

from a simple look, there are no await calls in this function, so therefore the implementation does not need to be async. why is it so?