Module Dependency Tree

                      Animation <-- + <-- Transition
                                    |
        + <-------------------------+ <-- +
        |                                 |
Node <--+ <-- Container <--+ <-- Stage <--+ <-- DragAndDrop
        |                  |
        + <-- Shape        + <-- Layer
                           |
                           + <-- Group

Verbose version

• Shape depends on Node
• Group depends on Container which depends on Node
• Layer depends on Container which depends on Node
• DragAndDrop depends on Stage which depends on Container which depends on Node
• DragAndDrop also directly depends on Node
• DragAndDrop also depends on Animation
• Transition depends on Aniamtion
• All shapes, including Rect, Circle, Text, etc., depend on Shape which depends on Node