<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def help(self):
 """Display help for the plugin."""

        if not self.fv.gpmon.has_plugin('WBrowser'):
            self._help_docstring()
            return

        self.fv.start_global_plugin('WBrowser')

        # need to let GUI finish processing, it seems
        self.fv.update_pending()

        obj = self.fv.gpmon.get_plugin('WBrowser')
        obj.show_help(plugin=self, no_url_callback=self._help_docstring)