private static PsiExpression createThisExpr(final PsiManager manager)  {
    try {
      return JavaPsiFacade.getElementFactory(manager.getProject()).createExpressionFromText("this", null);
    }
    catch (IncorrectOperationException e) {
      LOG.error(e);
      return null;
    }
  }
private static PsiExpression createThisExpr(final PsiManager manager)