How to use the secretstorage.get_default_collection function in SecretStorage

def get_default_collection(self):
        bus = secretstorage.dbus_init()
        try:
            collection = secretstorage.get_default_collection(bus)
        except exceptions.SecretStorageException as e:
            raise InitError("Failed to create the collection: %s." % e)
        if collection.is_locked():
            collection.unlock()
            if collection.is_locked(): # User dismissed the prompt
                raise InitError("Failed to unlock the collection!")
        return collection

def get_default_collection(self):
        bus = secretstorage.dbus_init()
        try:
            collection = secretstorage.get_default_collection(bus)
        except exceptions.SecretStorageException as e:
            raise InitError("Failed to create the collection: %s." % e)
        if collection.is_locked():
            collection.unlock()
            if collection.is_locked(): # User dismissed the prompt
                raise InitError("Failed to unlock the collection!")
        return collection

def get_default_collection(self):
        bus = secretstorage.dbus_init()
        try:
            collection = secretstorage.get_default_collection(bus)
        except exceptions.SecretStorageException as e:
            raise InitError("Failed to create the collection: %s." % e)
        if collection.is_locked():
            collection.unlock()
            if collection.is_locked(): # User dismissed the prompt
                raise InitError("Failed to unlock the collection!")
        return collection

def get_default_collection(self):
        bus = secretstorage.dbus_init()
        try:
            collection = secretstorage.get_default_collection(bus)
        except exceptions.SecretStorageException as e:
            raise InitError("Failed to create the collection: %s." % e)
        if collection.is_locked():
            collection.unlock()
            if collection.is_locked(): # User dismissed the prompt
                raise InitError("Failed to unlock the collection!")
        return collection

def del_pass(self):
        if not self.bus:
            return

        collection = secretstorage.get_default_collection(self.bus)
        if collection.is_locked():
            collection.unlock()
        x=collection.search_items(self.collection).next()
        x.delete()

def store_pass(self, password):
        if not self.bus:
            return

        try:
            collection = secretstorage.get_default_collection(self.bus)
            if collection.is_locked():
                collection.unlock()
            collection.create_item('pupy_credentials', self.collection, password)
        except Exception as e:
            logger.warning("Error with GnomeKeyring store_pass : %s"%e)