old_contents: from .plcorebase import PlCoreBase
  from .deployment import Deployment
  from .project import Project
  from .tag import Tag
  from .site import Site
  from .site import SitePrivilege
  from .image import Image
  from .user import User
  from .role import Role
  from .node import Node
  from .serviceclass import ServiceClass
  from .serviceresource import ServiceResource
  from .slice import Slice
  from .slice import SliceMembership
  from .slicetag import SliceTag
  from .sliver import Sliver
  from .reservation import ReservedResource
  from .reservation import Reservation
  from .network import Network, NetworkParameterType, NetworkParameter, NetworkSliver, NetworkTemplate, Router
  
new_contents: from .plcorebase import PlCoreBase
  from .deployment import Deployment
  from .project import Project
  from .tag import Tag
  from .site import Site
  from .site import SitePrivilege
  from .image import Image
  from .user import User
  from .role import Role
  from .node import Node
  from .serviceclass import ServiceClass
  from .serviceresource import ServiceResource
  from .slice import Slice
  from .slice import SliceMembership
  from .slicetag import SliceTag
  from .sliver import Sliver
  from .reservation import ReservedResource
  from .reservation import Reservation
  from .network import Network, NetworkParameterType, NetworkParameter, NetworkSliver, NetworkTemplate, Router, NetworkSlice
  
subject: add NetworkSlice to model imports