Gst.ChildProxy.prototype.get_child_by_index

function get_child_by_index(index:Number):GObject.Object {
    // Gjs wrapper for gst_child_proxy_get_child_by_index()
}

Fetches a child by its number.

index: the childs position in the child list
Returns: the child object or null if not found (index too high). Unref after usage. MT safe.