雀巢暑期网申internship statement

请问大家，雀巢网申界面上这个“internship statement issued by your university”指的是什么呀？有范例吗？ 谢谢{:51:} 原文“ Can you provide the Internship Statement issued by your university? (It is one of the required documents for internship with Nestlé). Kindly note that the Internship Statement must be a stamped document or confirmation email from university representative (e.g., your mentor/supervisor) using his/her university email box.”