BindAgain.js

 class App extends MainComponent {
  constructor() {
    super();
    this.state = {
      clicked: false    
    }
    this._bind('doSomething')
  }
  doSomething() {
    this.setState({clicked: true});
    console.log("state of clicked is", this.state.clicked)
  }

  render() {
    return (
      <div>
        <button onClick={this.doSomething}> click me </button>
      </div>
    )
  }
}