Can an EventEmitter class use its own events internally?

It is already established that any NodeJS class can extend EventEmitter:

const EventEmitter = require('events');
class MyEventEngine extends EventEmitter {
  constructor() {
    super();
  }
  crankItUp() {
    this.emit('crank', 'Boom Boom Bass!');
  }
const boombox = new MyEventEngine();
boombox.on('crank', () => { console.log('Turn that isht up!'); });
boombox.crankItUp(); // 'Turn that isht up!'

But how do I use the event internally within the class itself?

const EventEmitter = require('events');
class MyEventEngine extends EventEmitter {
  constructor() {
    super();
    this.on('crank', () => { console.log('Turn that isht down!'); });
  }
  crankItUp() {
    this.emit('crank', 'Boom Boom Bass!');
  }
const boombox = new MyEventEngine();
boombox.crankItUp(); // 'Turn that isht down!'

Is the latter an acceptable pattern?

via toszter