docs: def get_image(vm_):
      '''
      Return the image object to use
      '''
      images = avail_images()
      vm_image = six.text_type(config.get_cloud_config_value(
          'image', vm_, __opts__, search_global=False
      ))
  
      if not vm_image:
          raise SaltCloudNotFound('No image specified for this VM.')
  
      if vm_image and six.text_type(vm_image) in images:
          return images[vm_image]['ImageId']
      raise SaltCloudNotFound(
          'The specified image, \'{0}\', could not be found.'.format(vm_image)
      )