code: def build_api_url(project, method, base_url):
      
      return API_URL_TEMPLATE.format(
          api_base=base_url, api_version=API_VERSION, project=project, method=method
      )
docs: Construct the URL for a particular API call.
  
      This method is used internally to come up with the URL to use when
      making RPCs to the Cloud Datastore API.
  
      :type project: str
      :param project: The project to connect to. This is
                      usually your project name in the cloud console.
  
      :type method: str
      :param method: The API method to call (e.g. 'runQuery', 'lookup').
  
      :type base_url: str
      :param base_url: The base URL where the API lives.
  
      :rtype: str
      :returns: The API URL created.