src/vs/workbench/services/search/node/fileSearch.ts/FileWalker/getSearchPath
class FileWalker:	private getSearchPath(folderQuery: IFolderQuery, relativePath: string): string {
		if (folderQuery.folderName) {
			return path.join(folderQuery.folderName, relativePath);
		}
		return relativePath;
	}