source: geniuswebcore/geniusweb/references/Reference.py@ 63

from abc import ABC, abstractmethod
from typing import TypeVar, Generic, List
from pyson.JsonValue import JsonValue
from uri import URI          # type: ignore

class Reference (ABC):
        '''
        A reference is a URI to a Connectable object.
        '''
        @abstractmethod
        def getURI(self) -> URI:
                '''
                @return URI address to which a connection can be made with the real
                        object. HACK for now we return just the str 
                '''
                
        # WE CAN NOT DEFINE __hash__ here, it is not inherited...