src/vs/editor/contrib/multicursor/multicursor.ts/MultiCursorSession/addSelectionToNextFindMatch
class MultiCursorSession:	public addSelectionToNextFindMatch(): MultiCursorSessionResult | null {
		if (!this._editor.hasModel()) {
			return null;
		}

		const nextMatch = this._getNextMatch();
		if (!nextMatch) {
			return null;
		}

		const allSelections = this._editor.getSelections();
		return new MultiCursorSessionResult(allSelections.concat(nextMatch), nextMatch, ScrollType.Smooth);
	}