...Ui/DataProvider/Product/Form/Modifier/AdvancedPricing.php

app/code/Magento/Customer/Model/Config/Source/Group.php

...agento/Customer/Model/Config/Source/Group/Multiselect.php

...agento/Customer/Model/Customer/Attribute/Source/Group.php

...mer/Attribute/Source/GroupSourceLoggedInOnlyInterface.php

app/code/Magento/Customer/Model/Customer/Source/Group.php

...o/Customer/Model/Customer/Source/GroupSourceInterface.php

...del/Customer/Source/GroupSourceWithAllGroupsInterface.php

...Customer/Model/Customer/Source/GroupWithoutAllSources.php

...r/Test/Unit/Model/Config/Source/Group/MultiselectTest.php

...ento/Customer/Test/Unit/Model/Config/Source/GroupTest.php

app/code/Magento/Customer/etc/di.xml