public static boolean is(@NotNull IElementType source, @NotNull IElementType target) {
    if (source == target) {
      return true;
    }
    if (source instanceof ParentProviderElementType) {
      Set<IElementType> parents = ((ParentProviderElementType)source).getParents();
      return ContainerUtil.exists(parents, parent -> parent != null && is(parent, target));
    }
    return false;
  }
public static boolean is(@NotNull IElementType source, @NotNull IElementType target)