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Android Animations and Transitions Animations Basics Property Animation

I don't know how to do the code in Android Animation, what I have to type? It's a function?

How to answer the exercise, what kind of code?

CodeChallenge.java
// Use the variable named 'imageView'
private void animate() {
  imageView.setScaleX(0);
  imageView.setScaleY(0);
  imageView.animate().setScaleX(1).imageView.setScaleY(1).start();
}