src/vs/editor/common/model/textModelTokens.ts/TokenizationStateStore/constructor
class TokenizationStateStore:	constructor(
		public readonly tokenizationSupport: ITokenizationSupport,
		public readonly initialState: IState
	) {
		this._firstLineNeedsTokenization = 0;
		this._lineBeginState.set(0, this.initialState);
	}