docs: def clean_up_network(network_id, **kwargs):
      """
          Purge any deleted nodes, links, resourcegroups and scenarios in a given network
      """
      user_id = kwargs.get('user_id')
      #check_perm(user_id, 'delete_network')
      try:
          log.debug("Querying Network %s", network_id)
          net_i = db.DBSession.query(Network).filter(Network.id == network_id).\
          options(noload('scenarios')).options(noload('nodes')).options(noload('links')).options(noload('resourcegroups')).options(joinedload_all('types.templatetype.template')).one()
          net_i.attributes
  
          #Define the basic resource queries
          node_qry = db.DBSession.query(Node).filter(Node.network_id==network_id).filter(Node.status=='X').all()
  
          link_qry = db.DBSession.query(Link).filter(Link.network_id==network_id).filter(Link.status=='X').all()
  
          group_qry = db.DBSession.query(ResourceGroup).filter(ResourceGroup.network_id==network_id).filter(ResourceGroup.status=='X').all()
  
          scenario_qry = db.DBSession.query(Scenario).filter(Scenario.network_id==network_id).filter(Scenario.status=='X').all()
  
  
          for n in node_qry:
              db.DBSession.delete(n)
          for l in link_qry:
              db.DBSession.delete(l)
          for g in group_qry:
              db.DBSession.delete(g)
          for s in scenario_qry:
              db.DBSession.delete(s)
  
      except NoResultFound:
          raise ResourceNotFoundError("Network %s not found"%(network_id))
      db.DBSession.flush()
      return 'OK'