pub fn append_child(&mut self, parent: Entity, child: Entity) {
        self.get_widget(child).update_theme_by_state(true);
        self.ecm
            .entity_store_mut()
            .append_child(parent, child)
            .unwrap();
    }
/// Appends a child to a parent.
Appends a child to a parent.
Appends a child to a parent .
pub fn append_child(&mut self, parent: Entity, child: Entity) {
        self.get_widget(child).update_theme_by_state(true);
        self.ecm
            .entity_store_mut()
            .append_child(parent, child)
            .unwrap();
    }
pub fn append_child ( & mut self , parent : Entity , child : Entity ) { self . get_widget ( child ) . update_theme_by_state ( true ) ; self . ecm . entity_store_mut ( ) . append_child ( parent , child ) . unwrap ( ) ; }
Appends a child to a parent.
Appends a child to a parent .
&mut self
parent
Entity
child
Entity
&mut self
parent
Entity
child
Entity