src/vs/editor/contrib/multicursor/browser/multicursor.ts/SelectionHighlighterState/constructor
class SelectionHighlighterState:	constructor(
		private readonly _model: ITextModel,
		private readonly _searchText: string,
		private readonly _matchCase: boolean,
		private readonly _wordSeparators: string | null,
		prevState: SelectionHighlighterState | null
	) {
		if (prevState
			&& this._model === prevState._model
			&& this._searchText === prevState._searchText
			&& this._matchCase === prevState._matchCase
			&& this._wordSeparators === prevState._wordSeparators
			&& this._modelVersionId === prevState._modelVersionId
		) {
			this._cachedFindMatches = prevState._cachedFindMatches;
		}
	}