Implement a Container class parametrized with type A. Class constructor should accept a single private value of the given type. The class should implement the following methods:
        a. getContent returning the stored value
        b. applyFunction accepting function A=>R and returning the result of application of this function to stored value

sealed abstract class Cont[+A](value: A) {
  def getContent: A = value
  def applyFunction[R](a: A => R): R
}