#PLEASE DO NOT EDIT THIS CODE
#This code was generated using the UMPLE 1.38.0.8942.247e17422 modeling language!


class Student:
    def __init__(self, aNumber, aMentor):
        self._number = aNumber
        self._canSetMentor = True
        self._mentor = None
        self._setMentor(aMentor)

    def getNumber(self):
        return self._number

    def getMentor(self):
        return self._mentor

    def hasMentor(self):
        return self._mentor is not None

    def _setMentor(self, aNewMentor):
        if not self._canSetMentor:
            return False
        self._canSetMentor = False
        self._mentor = aNewMentor
        return True

    def delete(self):
        pass

    def __str__(self):
        return (super().__str__() + "["
                + "number:" + str(self.getNumber())
                + "]"
                + "\n  mentor = " + ("null" if self.getMentor() is None else format(id(self.getMentor()), "x")))

#PLEASE DO NOT EDIT THIS CODE
#This code was generated using the UMPLE 1.38.0.8942.247e17422 modeling language!


class Mentor:
    def __init__(self, aName):
        self._name = aName

    def getName(self):
        return self._name

    def delete(self):
        pass

    def __str__(self):
        return (super().__str__() + "["
                + "name:" + str(self.getName())
                + "]")