new
old
other

New::MyModule:
extra2: *New::MyModule::extra2
extra1: *New::MyModule::extra1
foo: *New::MyModule::foo

Old::MyModule:
extra2: *New::MyModule::extra2
extra1: *New::MyModule::extra1
foo: *New::MyModule::foo

My::Other::Name:
extra3: *My::Other::Name::extra3
foo: *New::MyModule::foo