<button
  type="button"
  (click)="expandOptionsList()"
  [attr.aria-controls]="isExpanded ? 'filters' : null"
  [attr.aria-pressed]="isExpanded"
  class="btn btn-link btn-sm pl-0">
  <span class="visually-hidden"> {{ 'Filters.Self' | translate }}: {{ srTranslationKey | translate }}. </span>
  {{ (isExpanded ? 'Action.Hide' : 'Action.Show') | translate }}

  <span class="triangle triangle--up" *ngIf="isExpanded"></span>
  <span class="triangle triangle--down" *ngIf="!isExpanded"></span>
</button>
