def MultiWaySync(self, accounts):
		"""Perform a multi-way sync between given accounts
		
		Args:
			accounts: List of account nicknames to sync between
		Returns:
			None
		"""
		cleaned_contacts = []
		contacts = []
		
		for account in accounts:
			self.SelectAccount(account)
			contacts.extend(self.GetContactList())
		
		duplicates, originals = ceFindDuplicates(contacts)
		merged, todelete = ceMergeDuplicates(duplicates)
		
		cleaned_contacts.extend(originals)
		cleaned_contacts.extend(merged)
		
		for account in accounts:
			self.SelectAccount(account)
			self.RemoveAll()
		
		for account in accounts:
			self.SelectAccount(account)
			for contact in cleaned_contacts:
				self.BatchEnqueue('create', contact)
			self.ExecuteBatchQueue()
	def OneWaySync(self, from_nickname, to_nickname):
		"""Perform a one-way sync: from_nickname --> to_nickname
		This method checks for duplicates. Contacts in 'from_account' with a duplicate in 'to_account' will be merged together and saved in 'to_account.
		
		Args:
			from_nickname: Account nickname to sync from
			to_nickname: Account nickname to sync to
		Returns:
			None
		"""
		contacts = []
		self.SelectAccount(from_nickname)
		from_contacts = self.GetContactList()
		self.SelectAccount(to_nickname)
		to_contacts = self.GetContactList()
		from_contacts.extend(to_contacts)
		
		duplicates, contacts = ceFindDuplicates(from_contacts)
		
		merged, todelete = ceMergeDuplicates(duplicates)
		
		# contacts: non-duplicate contacts
		# merged: merged duplicate contacts
		# todelete: duplicates to delete
		
		for contact in todelete:
			if ceIsOrigin(contact, self.current_account.email):
				self.BatchEnqueue('delete', contact)
		self.ExecuteBatchQueue()
		
		self.SelectAccount(to_nickname)
		for contact in contacts:
			if not ceIsOrigin(contact, self.current_account.email):
				self.BatchEnqueue('create', contact)
		self.ExecuteBatchQueue()
		
		for contact in merged:
			if ceIsOrigin(contact, self.current_account.email):
				self.BatchEnqueue('update', contact)
			else:
				self.BatchEnqueue('create', contact)
		self.ExecuteBatchQueue()