<web-section> <web-item> multi-level display?

[harainye]

Recently, I am learning JIRA plug-in development,I defined a drop-down button in the system.top.navigation.bar, I hope I can display multiple button.

There is no support for multi-level displays like AUI's Dropdowns?

Here is my configuration.

<!-- Plugins Menu -->
<web-item key="browse-plugins-link-common-header" name="Browse All Plugins Link - Common Header" section="system.top.navigation.bar" weight="85">
<label>Plugins</label>
<link linkId="plugin_link">/secure/XXXXX.jspa</link>
</web-item>

<!-- first stage -->
<web-section key="go_project" name="Statistics server platform Section" location="plugin_link" weight="20"/>

<web-item key='test123' section='plugin_link/go_project' weight='70'>
  <label>plugin1</label>
  <link linkId='test_link'>/secure/XXXX.jspa</link>
</web-item>

<!-- second stage -->
<web-section key="go_plugin" name="Go Pplugin Section" location="test_link" weight="20"/>

<web-item key='test456' section='test_link/go_plugin' weight='70'>
  <label>plugin1</label>
  <link linkId='test123'>/secure/XXXX.jspa</link>
</web-item>

Has anyone tried this configuration? I hope anyone can help solve it.