@NonNull
  @Override
  public List<IdpEntry> fetchIdpOptions() {
    return fedMasterClient.listAvailableIdps();
  }
@Test
  void fetchIdpOptions() {

    var fedmasterClient = mock(FederationMasterClient.class);

    var sut =
        new SelectSectoralIdpStepImpl(
            null, fedmasterClient, null, null, null, null, null, null, null);

    var entries = List.of(new IdpEntry("https://tk.example.com", "Techniker KK", null));
    when(fedmasterClient.listAvailableIdps()).thenReturn(entries);

    // when
    var idps = sut.fetchIdpOptions();

    // then
    assertEquals(entries, idps);
  }