A TextLineReader is an object that can read a text file one line at a time, parsing each line and turning it into an object of some type. The reason we've implemented it as a class template is so that different TextLineReaders can transform their file into different types of objects; for example, a TextLineReader will return an int from every line, while a TextLineReader will return a Student instead. Because TextLineReader itself can't know how to transform each line from the file into the corresponding result type, a line parser function is provided, which does that transformation (i. e., takes each line's text and returns the appropriate kind of object, or throws an exception if that transformation fails because the format of the line is incorrect).Write the implementation of the TextLineReader class template. You may not change any of the public declarations that were provided, but you can add anything you'd like — including public or private member functions, private member variables, and so on — but you'll need to meet all of the following design requirements.