componentWillMount() {
    this.data = this.data
      .merge(this.props, {
        onClick: this.props.onClick, // eslint-disable-line react/prop-types
      });
  }
// so that the handler can set the state.
so that the handler can set the state.
so that the handler can set the state .
componentWillMount() {
    this.data = this.data
      .merge(this.props, {
        onClick: this.props.onClick, 
      });
  }
componentWillMount ( ) { this . data = this . data . merge ( this . props , { onClick : this . props . onClick , } ) ; }
so that the handler can set the state.
so that the handler can set the state .
// eslint-disable-line react/prop-types