code: def GetSOAPHeaders(self, create_method):
      
      header = create_method(self._SOAP_HEADER_CLASS)
      header.networkCode = self._ad_manager_client.network_code
      header.applicationName = ''.join([
          self._ad_manager_client.application_name,
          googleads.common.GenerateLibSig(self._PRODUCT_SIG)])
      return header
docs: Returns the SOAP headers required for request authorization.
  
      Args:
        create_method: The SOAP library specific method used to instantiate SOAP
        objects.
  
      Returns:
        A SOAP object containing the headers.