text: from schemata import Connection, Edge, Node
  
  
  class UserNode(Node):
      def __init__(self, objekt):
          super().__init__(objekt)
  
  class UserEdge(Edge):
      def __init__(self, obj, node_class=UserNode):
          super().__init__(obj, node_class)
  
  class UserConnection(Connection):
      def __init__(self, objs):
          super().__init__(objs, edge_class=UserEdge, node_class=UserNode)
  