'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'

def __init__(self, version, url=default_url, username=None, password=None, use_vcap_services=True):

    WatsonDeveloperCloudService.__init__(self, 'discovery', url, username, password, use_vcap_services)
    self.version = version
