onOptionChange() {
    u.log(1, "FlowchartOptionsCtrl.onOptionChange()");
    this.flowchartHandler.optionChanged();
    this.render();
  }
/**
   * onOptionChange event when options change
   *
   * @memberof FlowchartOptionsCtrl
   */
onOptionChange event when options change
@memberof FlowchartOptionsCtrl
onOptionChange event when options change @memberof FlowchartOptionsCtrl
onOptionChange() {
    u.log(1, "FlowchartOptionsCtrl.onOptionChange()");
    this.flowchartHandler.optionChanged();
    this.render();
  }
onOptionChange ( ) { u . log ( 1 , "FlowchartOptionsCtrl.onOptionChange()" ) ; this . flowchartHandler . optionChanged ( ) ; this . render ( ) ; }
onOptionChange event when options change
 @memberof FlowchartOptionsCtrl
onOptionChange event when options change @memberof FlowchartOptionsCtrl