@NotNull
  public Map<PushSupport<?, ?, ?>, VcsPushOptionsPanel> createAdditionalPanels() {
    Map<PushSupport<?, ?, ?>, VcsPushOptionsPanel> result = new LinkedHashMap<>();
    for (PushSupport<?, ?, ?> support : myPushSupports) {
      ContainerUtil.putIfNotNull(support, support.createOptionsPanel(), result);
    }

    return result;
  }
@NotNull
  public Map<PushSupport<?, ?, ?>, VcsPushOptionsPanel> createAdditionalPanels()