[TYPO3] ifEmpty, required and so on

[Victor Livakovsky]

Hello.

I have to implement a simple feature, but have no idea, how to do it
with TS.
I have such menu:

temp.submenu = COA
temp.submenu.wrap = <div class="sub">|</div>
temp.submenu.10 = TEXT
temp.submenu.10.value = <div class="subheader">{$Name} - {field:title}</div>
temp.submenu.10.insertData = 1
temp.submenu.20 = HMENU
temp.submenu.20.wrap = <div class="submenu">|</div>
temp.submenu.20.entryLevel = 1
temp.submenu.20.1 = TMENU
temp.submenu.20.1 {
  NO.wrapItemAndSub = <p>|</p>
}

And I want it be visible only on that pages, which has subpages. I was
trying to play around "ifEmpty", "if" and "required", but cann't
understand: how can I disable whole COA (temp.submenu) object, when
temp.submenu.20 is empty?

Will be glad to read your suggestions.