'Construct an instance. Fetches service parameters from VCAP_SERVICES
runtime variable for Bluemix, or it defaults to local URLs.
:param version: specifies the specific version-date of the service to
use, for example \'2016-05-20\'
:param api_key: specifies the credentials for the service (doesn\'t
use username and password)'

def __init__(self, version, url=default_url, **kwargs):

    WatsonDeveloperCloudService.__init__(self, 'watson_vision_combined', url, **kwargs)
    self.version = version
