Function propagate_parent_transforms 

pub fn propagate_parent_transforms(
    queue: Local<'_, WorkQueue>,
    roots: Query<'_, '_, (Entity, Ref<'_, Transform>, &mut GlobalTransform, &Children, Ref<'_, TransformTreeChanged>), Without<ChildOf>>,
    nodes: Query<'_, '_, (Entity, (Ref<'static, Transform>, Mut<'static, GlobalTransform>, Ref<'static, TransformTreeChanged>), (Option<&'static Children>, &'static ChildOf))>,
    static_optimizations: Res<'_, StaticTransformOptimizations>,
)

Update GlobalTransform component of entities based on entity hierarchy and Transform component.

Third party plugins should ensure that this is used in concert with sync_simple_transforms and mark_dirty_trees.