src/vs/editor/common/languages/supports/tokenization.ts/ParsedTokenThemeRule/constructor
class ParsedTokenThemeRule:	constructor(
		token: string,
		index: number,
		fontStyle: number,
		foreground: string | null,
		background: string | null,
	) {
		this.token = token;
		this.index = index;
		this.fontStyle = fontStyle;
		this.foreground = foreground;
		this.background = background;
	}