code: def get_image_path(definition):
      
      path = resources_path(
          'img', 'wizard', 'keyword-subcategory-%s.svg' % definition['key'])
      if os.path.exists(path):
          return path
      else:
          return not_set_image_path
docs: Helper to get path of image from a definition in resource directory.
  
      :param definition: A definition (hazard, exposure).
      :type definition: dict
  
      :returns: The definition's image path.
      :rtype: str