code: def add_config_file(self, config_filename):
          
          with open(config_filename, 'rb') as f:
              content = f.read()
              config = yaml.load(content)
              self.add_config(config, config_filename)
docs: Parses the content.types file and updates the content types database.
  
          :param config_filename:
              The path to the configuration file.