Function attachTokenProvider

@mcp-z/oauth-google - Shared Google OAuth implementation

Provides OAuth authentication:

Loopback OAuth (RFC 8252) - Server-managed, file-based tokens
Service Account authentication for server-to-server scenarios

attachTokenProvider<T extends RefreshHandlerClient>(
client: T,
auth: GoogleAuthProvider,
): T
Point a Google API client at a token provider.
Type Parameters
- T extends RefreshHandlerClient
Parameters
- client: T
- auth: GoogleAuthProvider
Returns T
Example
```
google.gmail({ version: 'v1', auth: attachTokenProvider(new google.auth.OAuth2(), extra.authContext.auth) })
```
- Defined in lib/attach-token-provider.ts:35