Ensure this instance is class_.
animation.find("my rect").setDirection(1); // type error
animation.find("my rect").cast("RectShape").setDirection(1); // works
animation.find("my rect").cast(RectShape).setDirection(1);
Deep clones this object
Test if this item is an instance of class_. You can also use instanceof, but this is more conventient.
// example
const fill = new FillShape();
fill.is("FillShape") // true
fill.is("Shape") // true
fill.is("LottieItem") // true
fill.is("Lottie") // false
``` // example const fill = new FillShape();
fill.is(FillShape) // true fill.is(Shape) // true fill.is(LottieItem) // true
fill.is(Lottie) // false ```
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