How to add a proxy for the Gemini?

[neilzhangpro]

Hi, i wanna add a proxy to the Gemini API , how can i make it ? i just found that:

export declare class Gemini extends ToolCallLLM<GeminiAdditionalChatOptions> {
    model: GEMINI_MODEL;
    temperature: number;
    topP: number;
    maxTokens?: number | undefined;
    session: IGeminiSession;
    constructor(init?: GeminiConfig);
    get supportToolCall(): boolean;
    get metadata(): LLMMetadata;
    protected nonStreamChat(params: GeminiChatParamsNonStreaming): Promise<GeminiChatNonStreamResponse>;
    protected streamChat(params: GeminiChatParamsStreaming): GeminiChatStreamResponse;
    chat(params: GeminiChatParamsStreaming): Promise<GeminiChatStreamResponse>;
    chat(params: GeminiChatParamsNonStreaming): Promise<GeminiChatNonStreamResponse>;
    complete(params: LLMCompletionParamsStreaming): Promise<AsyncIterable<CompletionResponse>>;
    complete(params: LLMCompletionParamsNonStreaming): Promise<CompletionResponse>;
}

where can I set the apikey and baseUrl like the openai? thanks!