code: def applet_validate_batch(object_id, input_params={}, always_retry=True, **kwargs):
      
      return DXHTTPRequest('/%s/validateBatch' % object_id, input_params, always_retry=always_retry, **kwargs)
docs: Invokes the /applet-xxxx/validateBatch API method.
  
      For more info, see: https://wiki.dnanexus.com/API-Specification-v1.0.0/Applets-and-Entry-Points#API-method%3A-%2Fapplet-xxxx%2FvalidateBatch