src/vs/workbench/contrib/welcomeGettingStarted/browser/startupPage.ts/StartupPageContribution/openGettingStarted
class StartupPageContribution:	private async openGettingStarted(showTelemetryNotice?: boolean) {
		const startupEditorTypeID = gettingStartedInputTypeId;
		const editor = this.editorService.activeEditor;

		// Ensure that the welcome editor won't get opened more than once
		if (editor?.typeId === startupEditorTypeID || this.editorService.editors.some(e => e.typeId === startupEditorTypeID)) {
			return;
		}

		const options: IEditorOptions = editor ? { pinned: false, index: 0 } : { pinned: false };
		if (startupEditorTypeID === gettingStartedInputTypeId) {
			this.editorService.openEditor(this.instantiationService.createInstance(GettingStartedInput, { showTelemetryNotice }), options);
		}
	}