code: def read_value_from_path(value):
      
      if value.startswith('file://'):
          path = value.split('file://', 1)[1]
          config_directory = get_config_directory()
          relative_path = os.path.join(config_directory, path)
          with open(relative_path) as read_file:
              value = read_file.read()
      return value
docs: Enables translators to read values from files.
  
      The value can be referred to with the `file://` prefix. ie:
  
          conf_key: ${kms file://kms_value.txt}