@Override
  @NotNull
  public Collection<AbstractTreeNode<?>> getChildren() {
    List<PropertiesFile> propertiesFiles = getResourceBundle().getPropertiesFiles();
    Collection<AbstractTreeNode<?>> children = new ArrayList<>();
    for (PropertiesFile propertiesFile : propertiesFiles) {
      AbstractTreeNode node = new PsiFileNode(myProject, propertiesFile.getContainingFile(), getSettings());
      children.add(node);
    }
    return children;
  }
@Override
  @NotNull
  public Collection<AbstractTreeNode<?>> getChildren()