src/vs/workbench/contrib/terminal/electron-sandbox/localTerminalService.ts/LocalTerminalService/updateIcon
class LocalTerminalService:	async updateIcon(id: number, icon: URI | { light: URI; dark: URI } | { id: string, color?: { id: string } }, color?: string): Promise<void> {
		await this._localPtyService.updateIcon(id, icon, color);
	}