How to trigger mouse out in mat-autocomplete

 <mat-autocomplete style="border:1px solid green"  #auto="matAutocomplete" (optionSelected)="addFromAutocomplete($event)" [displayWith]="displayFn" (mouseleave)="closePanel()"
                    autoActiveFirstOption >
    <mat-option *ngFor="let tag of this.sourceFiltered$ | async; trackBy: optionTrackByFn" [value]="tag">
      <div class="row">
        <div class="tag">
          <div class="tag-name mat-body-2">{{tag.name}}</div>
          <div class="tag-category mat-caption">{{tag.category}}</div>
        </div>
      </div>
    </mat-option>
  </mat-autocomplete>