Clutter::ChildMeta is a wrapper object created by Clutter::Container implementations in order to store child-specific data and properties.
A Clutter::ChildMeta wraps a Clutter::Actor inside a Clutter::Container and it is used to store child properties that can later be accessed using Clutter::Container::child_set() and Clutter::Container::child_get().
See the Clutter::Container documentation on how to create ChildMeta objects when implementing a Container actor.
