Function bevy::prelude::parent_update_system

pub fn parent_update_system(
    commands: Commands, 
    removed_parent_query: Query<'_, Without<Parent, (Entity, &PreviousParent)>>, 
    changed_parent_query: Query<'_, (Entity, &Parent, &mut PreviousParent)>, 
    children_query: Query<'_, &mut Children>
)