@Override
    protected void doIntroduce(@NotNull Project project, PsiExpression element) {
      PsiExpression[] literalExpressions = getDuplicateLiteralsUnderProgress(element);
      if (literalExpressions == null) return;
      introduceConstant(literalExpressions, project);
    }
@Override
    protected void doIntroduce(@NotNull Project project, PsiExpression element)