getChildAt(index) {
		if (index >= 0 && index < this.getChildren().length) {
			return this.getChildren()[index];
		} else {
			throw new Error("Index (" + index + ") Out Of Bounds for getChildAt()");
		}
	}
Returns the Child at the specified index
@param {number} index - The index of the child
@returns {Renderable} the child at the specified index