src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts/MainThreadDocumentSemanticTokensProvider/constructor
class MainThreadDocumentSemanticTokensProvider:	constructor(
		private readonly _proxy: ExtHostLanguageFeaturesShape,
		private readonly _handle: number,
		private readonly _legend: languages.SemanticTokensLegend,
		public readonly onDidChange: Event<void> | undefined,
	) {
	}