code: def _get_access_key_id(self):
          
          if 'VCAP_SERVICES' in os.environ:
              services = json.loads(os.getenv('VCAP_SERVICES'))
              return services['predix-blobstore'][0]['credentials']['access_key_id']
          else:
              return predix.config.get_env_value(self, 'access_key_id')
docs: Returns the access key for an instance of Blob Store service from
          environment inspection.