docs: def easeInElastic(n, amplitude=1, period=0.3):
      """An elastic tween function that begins with an increasing wobble and then snaps into the destination.
  
      Args:
        n (float): The time progress, starting at 0.0 and ending at 1.0.
  
      Returns:
        (float) The line progress, starting at 0.0 and ending at 1.0. Suitable for passing to getPointOnLine().
      """
      _checkRange(n)
      return 1 - easeOutElastic(1-n, amplitude=amplitude, period=period)