Parent.function1 (function1 defined in Parent)
ChildX.function1 (function1 imported from Parent)
ChildX.function2 (function2 defined in ChildX)
ChildY.function1 (function1 defined in ChildY)
ChildY.function2 (function2 defined in ChildY)
GrandchildYX.function1 (function1 imported from ChildY)
GrandchildYX.function2 (function2 defined in GrandchildYX)