title: How to play animation of different GameObject in Unity?
body: <p>I have several gameObjects in my scene, let's say two: <code>Button</code> and <code>Controller(empty GameObject)</code>;
  I keep all the code in the script attached to <code>Controller</code>, this script contains method <code>onButtonClick()</code> which should start the animation of Button.
  Button already has Animator component with working animation(when it is ticked, animation starts automatically after starting the game).
  How can I launch this animation from Controller on button click? Thank you.</p>