Function children_action_control_bindings 

pub fn children_action_control_bindings(
    widget: &dyn Widget,
) -> Vec<ControlBindingMetadata>

The action-emitter bindings of widget’s exposed children, and of the widget a decorator wraps — no child of it, but met in its place. A wrapper’s own bindings are semantic and never consume action availability, so this is a wrapper’s whole action inventory without materializing accessibility.