Write the make$\_$squared$()$ function using Python to square an element of a singly linked list with only the head pointer. The function takes a linked list instance sll and an integer value n as parameters. The function should replace the first occurrence of n in sll by its square $($n$^2)$ if it exists. Otherwise, it doesn$$t make any changes to the list.

For example, if sll is head$->3->4->2->4->8->$ and the function call is as follows: make$\_$squared$($sll$,4),$ the linked list sll changes in place to: head$->3->16->2->4->8->.$

Use the linked list class shown at the end of this document as the reference linked list class. Your code must work as described when applied to an instance of this class.