LPS-46548 Move logic to modelImpl
LPS-46548 Fix Tests
LPS-46548 Apply same pattern to DDMStructure and DLFileEntry
LPS-46548 Extract generic logic
LPS-46548 I think it belongs more in GroupImpl and not in PortalImpl
LPS-46548 Call it name
LPS-46548 SF
LPS-46548 SF
LPS-46548 Regen