Show/Hide Tab item in Angular Tabs component

import { Component, ViewChild } from '@angular/core';
import { ButtonComponent } from '@syncfusion/ej2-angular-buttons';
import { TabComponent } from '@syncfusion/ej2-angular-navigations';

@Component({
    selector: 'app-container',
    template: `
<div class="control-section e-tab-section">
  <div class="e-sample-resize-container">
    <button
      #addButton
      ejs-button
      id="addButton"
      type="button"
      content="Hide/Show Tab Item"
      (click)="onButtonClick()"
    ></button>

    <!-- Render the Tab Component -->
    <ejs-tab #tabObj id="tab_default" heightAdjustMode="Auto">
      <e-tabitems>
        <e-tabitem [header]="headerText[0]">
          <ng-template #content>
            Twitter is an online social networking service that enables users to
            send and read short 140-character messages called "tweets".
            Registered users can read and post tweets, but those who are
            unregistered can only read them. Users access Twitter through the
            website interface, SMS or mobile device app Twitter Inc. is based in
            San Francisco and has more than 25 offices around the world. Twitter
            was created in March 2006 by Jack Dorsey, Evan Williams, Biz Stone,
            and Noah Glass and launched in July 2006. The service rapidly gained
        worldwide popularity, with more than 100 million users posting 340
        million tweets a day in 2012.The service also handled 1.6 billion
        search queries per day.
      </ng-template>
    </e-tabitem>
    <e-tabitem [header]="headerText[1]">
      <ng-template #content>
        Facebook is an online social networking service headquartered in
        Menlo Park, California. Its website was launched on February 4,
        2004, by Mark Zuckerberg with his Harvard College roommates and
        fellow students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz
        and Chris Hughes.The founders had initially limited the website\'\s
        membership to Harvard students, but later expanded it to colleges in
        the Boston area, the Ivy League, and Stanford University. It
        gradually added support for students at various other universities
        and later to high-school students.
      </ng-template>
    </e-tabitem>
    <e-tabitem [header]="headerText[2]">
      <ng-template #content>
        WhatsApp Messenger is a proprietary cross-platform instant messaging
        client for smartphones that operates under a subscription business
        model. It uses the Internet to send text messages, images, video,
        user location and audio media messages to other users using standard
        cellular mobile numbers. As of February 2016, WhatsApp had a user
        base of up to one billion,[10] making it the most globally popular
        messaging application. WhatsApp Inc., based in Mountain View,
        California, was acquired by Facebook Inc. on February 19, 2014, for
        approximately US6. 9.3 billion.
      </ng-template>
    </e-tabitem>
  </e-tabitems>
</ejs-tab>
  </div>
</div>
    `
})

export class AppComponent {
  @ViewChild('tabObj')
  public tabObj: TabComponent;
  @ViewChild('addButton')
  public addButton: ButtonComponent;
  public isBool: boolean = false;
  // Mapping Tab items Header property
  public headerText: Object = [
{ text: 'Twitter', iconCss: 'e-twitter' },
{ text: 'Facebook', iconCss: 'e-facebook' },
{ text: 'WhatsApp', iconCss: 'e-whatsapp' },
  ];
  public onButtonClick(): void {
this.isBool = !this.isBool;
this.tabObj.hideTab(0, this.isBool);
  }
}