Write the public boolean method called "addValue$($int newVal, int pos$)"$ that adds the "newVal" parameter

to a linked list of ValNode objects $($shown below$)$ at the position specified by the "pos" parameter. Note:

the value cannot be added if the "pos" value is less than zero or is beyond the last element in the list

$($return false in that case$).$ Assume that there is an int method you can use called "size$()"$ that returns the

size of the linked list. Also assume there is a variable called "first" that refers to the beginning of the linked

list. Return true if newVal is added successfully, false if it cannot be added. $[16$ pts$]$