getEdges(string, int) -> list(string)

        Returns a list of all edges in the nth next stage.
        For waiting stages this is a single edge
        For walking stages this is the complete route
        For driving stages this is [origin, destination]

        nextStageIndex 0 retrieves value for the current stage.
        nextStageIndex must be lower then value of getRemainingStages(personID)

def getEdges(self, personID, nextStageIndex=0):
        """getEdges(string, int) -> list(string)

        Returns a list of all edges in the nth next stage.
        For waiting stages this is a single edge
        For walking stages this is the complete route
        For driving stages this is [origin, destination]

        nextStageIndex 0 retrieves value for the current stage.
        nextStageIndex must be lower then value of getRemainingStages(personID)
        """
        self._connection._beginMessage(
            tc.CMD_GET_PERSON_VARIABLE, tc.VAR_EDGES, personID, 1 + 4)
        self._connection._string += struct.pack("!Bi",
                                                tc.TYPE_INTEGER, nextStageIndex)
        return self._connection._checkResult(tc.CMD_GET_PERSON_VARIABLE,
                                             tc.VAR_EDGES, personID).readStringList()