Method getById

src/gsap-core.js:1738–1746

(id)

	}

	getById(id) {
		let animations = this.getChildren(1, 1, 1),
			i = animations.length;
		while(i--) {
			if (animations[i].vars.id === id) {
				return animations[i];
			}
		}
	}

	remove(child) {
		if (_isString(child)) {