src/vs/platform/terminal/node/ptyService.ts/PtyService/_throwIfNoPty
class PtyService:	private _throwIfNoPty(id: number): PersistentTerminalProcess {
		const pty = this._ptys.get(id);
		if (!pty) {
			throw new ErrorNoTelemetry(`Could not find pty on pty host`);
		}
		return pty;
	}