after manipulation and processing of messages, call this method in order to clean it and leave the inbox in an ordered fashion, so searches are faster next time the processing occurs.
efThis method should be implemented by actual za_UI_api
instantiation and should include any set of calls to
procedures createUIFormDefinition, buttons etc and any other
element for a kick start navigation definition
This method is called twice: once before XML init, and the
next call is after XML init.