whole_func_string: function applyPlugin(extraPlugin) {
      if (Array.isArray(extraPlugin)) {
        const plugin = extraPlugin[0]
        const config = extraPlugin[1]
        return parser.use(plugin, config || {})
      }
      parser.use(extraPlugin)
    }
func_code_string: function applyPlugin(extraPlugin) {
      if (Array.isArray(extraPlugin)) {
        const plugin = extraPlugin[0]
        const config = extraPlugin[1]
        return parser.use(plugin, config || {})
      }
      parser.use(extraPlugin)
    }
func_documentation_string: parser.use(podcast, options.podcast || {})