'Attach this EBS volume to an EC2 instance.
:type instance_id: str
:param instance_id: The ID of the EC2 instance to which it will
be attached.
:type device: str
:param device: The device on the instance through which the
volume will be exposed (e.g. /dev/sdh)
:rtype: bool
:return: True if successful'

def attach(self, instance_id, device, dry_run=False):

    return self.connection.attach_volume(self.id, instance_id, device, dry_run=dry_run)
