Returns an integer list that represents all possible winners of a profile under Coombs rule.

        :ivar Profile profile: A Profile object that represents an election profile.

def coombs_winners(self, profile):
        """
        Returns an integer list that represents all possible winners of a profile under Coombs rule.

        :ivar Profile profile: A Profile object that represents an election profile.
        """
        elecType = profile.getElecType()
        if elecType == "soc" or elecType == "csv":
            return self.coombssoc_winners(profile)
        elif elecType == "toc":
            return self.coombstoc_winners(profile)
        else:
            print("ERROR: unsupported profile type")
            exit()