src/vs/workbench/contrib/search/common/searchModel.ts/FileMatch/unbindModel
class FileMatch:	private unbindModel(): void {
		if (this._model) {
			this._updateScheduler.cancel();
			this._model.changeDecorations((accessor) => {
				this._modelDecorations = accessor.deltaDecorations(this._modelDecorations, []);
			});
			this._model = null;
			this._modelListener!.dispose();
		}
	}