@Nullable
  private HtmlChunk getLinkToClass(@NotNull PyClass pyClass, boolean preferQualifiedName) {
    final String qualifiedName = pyClass.getQualifiedName();
    final String shortName = pyClass.getName();

    final String linkText = preferQualifiedName && qualifiedName != null ? qualifiedName : shortName;
    if (linkText == null) {
      return null;
    }

    if (qualifiedName != null) {
      return PyDocumentationLink.toClass(pyClass, linkText);
    }
    else if (PsiTreeUtil.getParentOfType(myElement, PyClass.class, false) == pyClass) {
      return PyDocumentationLink.toContainingClass(linkText);
    }
    return HtmlChunk.raw(linkText);
  }
@Nullable
  private HtmlChunk getLinkToClass(@NotNull PyClass pyClass, boolean preferQualifiedName)