src/vs/workbench/contrib/search/common/searchModel.ts/FolderMatch/disposeMatches
class FolderMatch:	private disposeMatches(): void {
		[...this._fileMatches.values()].forEach((fileMatch: FileMatch) => fileMatch.dispose());
		[...this._unDisposedFileMatches.values()].forEach((fileMatch: FileMatch) => fileMatch.dispose());
		this._fileMatches.clear();
		this._unDisposedFileMatches.clear();
	}