@Nullable
  private static String getSuperClassName(LighterAST tree, LighterASTNode call) {
    LighterASTNode aClass = findClass(tree, call);
    return getReferenceName(tree, LightTreeUtil.firstChildOfType(tree, aClass, EXTENDS_LIST));
  }
@Nullable
  private static String getSuperClassName(LighterAST tree, LighterASTNode call)