GoogleSearchRetrievalTool does not have googleSearch

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#### Environment details

- Programming language:Node.js v20.18.1
- OS: Macos 14.6
- Language runtime version: v20.18.1
- Package version: latest

#### Steps to reproduce

1. define a obj like
const googleSearchRetrievalTool: GoogleSearchRetrievalTool = {
googleSearch: {},
};

2. error TS2353: Object literal may only specify known properties, and 'googleSearch' does not exist in type 'GoogleSearchRetrievalTool'.

125 |
126 | const googleSearchRetrievalTool: GoogleSearchRetrievalTool = {
> 127 | googleSearch: {},
| ^
128 | };
129 |

3. i can hack my way around this but can the source code be updated
Making sure to follow these steps will guarantee the quickest resolution possible.

Thanks!