'Unmaps a cloud IP address from its current destination making
it available to remap. This remains in the account\'s pool
of addresses
@note: This is an API extension for use on Brightbox
:param  cloud_ip_id: The id of the cloud ip.
:type   cloud_ip_id: ``str``
:return: True if the unmap was successful.
:rtype: ``bool``'

def ex_unmap_cloud_ip(self, cloud_ip_id):

    response = self._post(('/%s/cloud_ips/%s/unmap' % (self.api_version, cloud_ip_id)))
    return (response.status == httplib.ACCEPTED)
