'A batch version of change_message_visibility that can act
on up to 10 messages at a time.
:type messages: List of tuples.
:param messages: A list of tuples where each tuple consists
of a :class:`boto.sqs.message.Message` object and an integer
that represents the new visibility timeout for that message.'

def change_message_visibility_batch(self, messages):

    return self.connection.change_message_visibility_batch(self, messages)
