Null-safe operator for Scala?

gistfile1.txt

// from https://code.scottshipp.com/2016/07/28/does-scala-have-the-safe-navigation-null-conditional-operator/

implicit class NullSafe[A, B](val a: A) extends AnyVal {
  def ?(f: A => B): B = { if(a == null) null.asInstanceOf[B] else f(a) }
}

//example
val s = "Hello, World!"
s?(_.reverse)?(_.reverse)   //returns "Hello, World!"
val sNull: String = null
sNull?(_.reverse)?(_.reverse) //returns null