TypeScript compiler did not support the import sdk

```
import { Dropbox } from 'dropbox';

const dbx = new Dropbox({ accessToken });
dbx.filesSearch({
path: '',
query: filename,
start: nextPageToken,
max_results: pageSize,
mode: 'filename'
})
```

The `mode` type here is `string` which is not assignable to the type definition: `SearchMode`. However, it is unclear how to import the type

`(method) DropboxTypes.Dropbox.filesSearch(arg: DropboxTypes.files.SearchArg): Promise`