Ngx-chips populate doesn't post the HTML object onFocus of input

Question

This code is used to populate auto suggest field with

<div *ngFor="let field of fields; let i=index">
    <label class="pt-3 font-600">{{field.label}} {{field.id}}</label>
    <tag-input
      [identifyBy]="'id'"
      [inputClass]="riProSuggestionField"
      [displayBy]="'name'"
      (onFocus)="onFocusInput($event)"
      [placeholder]="field.placeholder"
      [(ngModel)]="field.data"
      [inputId]="field.id"
      [onlyFromAutocomplete]="true"
      name="{{field.label}}"
    >
      <tag-input-dropdown
      [autocompleteObservable]="getSuggestions"
      </tag-input-dropdown>
    </tag-input>
  </div>

On .ts file

onFocusInput(event) {
}

In this function it should give the html object of <tag-input> , Does anybody have trick to get this HTML object onFocusInput ?