extensions/markdown-language-features/src/client/client.ts/MdLanguageClient/getReferencesToFileInWorkspace
class MdLanguageClient:	getReferencesToFileInWorkspace(resource: vscode.Uri, token: vscode.CancellationToken) {
		return this._client.sendRequest(proto.getReferencesToFileInWorkspace, { uri: resource.toString() }, token);
	}