private handleFailure(error) {
    if (error.error['business-exception-type'] === BusinessExceptionTypes.CANNOT_PUBLISH_COMPETENCE_SET_WHEN_KNOW_HOW_IS_NOT_PUBLISHED) {
      this.notificationsService.error('portal.competence-catalog.competence-sets.error-message.cannot_publish_competence_set_when_know_how_is_not_published');
      return EMPTY;
    }
    if (error.error['business-exception-type'] === BusinessExceptionTypes.CANNOT_PUBLISH_DRAFT) {
      this.notificationsService.error('portal.competence-catalog.error-message.cannot_publish_draft');
      return EMPTY;
    }
    return throwError(error);
  }

.pipe(catchError(this.handleFailure.bind(this)))

export class AppComponent  {
  name = 'Angular';

  constructor(http: HttpClient, errorHandler: ErrorHandler) {
    http.get(...).subscribe(
      name => this._name = name,
      error => errorHandler.handleError(error),
    )
  }
}