src/vs/workbench/contrib/notebook/browser/contrib/find/findModel.ts/FindModel/_updateCurrentMatch
class FindModel:	private _updateCurrentMatch(findMatches: CellFindMatchWithIndex[], currentMatchesPosition: number) {
		this.set(findMatches, false);
		this._currentMatch = currentMatchesPosition;
		const nextIndex = this._findMatchesStarts!.getIndexOf(this._currentMatch);
		this.setCurrentFindMatchDecoration(nextIndex.index, nextIndex.remainder);

		this._state.changeMatchInfo(
			this._currentMatch,
			this._findMatches.reduce((p, c) => p + c.matches.length, 0),
			undefined
		);
	}