[TYPO3-english] Add controller action

[Jan Bednarik]

Hi,

I'm extending an extBase extension and I'd like an action to redirect to 
my custom action.

Basically, the problem is that the action uses flash messages, but I'd 
like it to redirect to another action which would display my message.

Problem is that I don't know how to extend list of defined actions in 
ext_localconf.php/\TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin.

Is it even possible?

Thanks

Jan