getChildAt<T extends GDisplayObject> method
Returns the child at a specific index in the list of children of this container.
Implementation
T getChildAt<T extends GDisplayObject>(int index) {
final len = children.length;
if (index < 0) index = len + index;
if (index >= 0 && index < len) {
return children[index] as T;
}
throw RangeError('Invalid child index');
}