src/vs/workbench/contrib/notebook/browser/contrib/find/findModel.ts/FindModel/setCurrentFindMatchDecoration
class FindModel:	private setCurrentFindMatchDecoration(cellIndex: number, matchIndex: number) {
		this._notebookEditor.changeModelDecorations(accessor => {
			const findMatchesOptions: ModelDecorationOptions = FindDecorations._CURRENT_FIND_MATCH_DECORATION;

			const cell = this._findMatches[cellIndex].cell;
			const match = this._findMatches[cellIndex].matches[matchIndex];
			const decorations: IModelDeltaDecoration[] = [
				{ range: match.range, options: findMatchesOptions }
			];
			const deltaDecoration: ICellModelDeltaDecorations = {
				ownerId: cell.handle,
				decorations: decorations
			};

			this._currentMatchDecorations = accessor.deltaDecorations(this._currentMatchDecorations, [deltaDecoration]);
		});
	}