Custom BaseChatViewController from storyboard

I have used the current Example ChattoApp , i want to add custom header not like navigation header which was used in this (DemoChatViewController) therefore i need to reflect this design enhancement from Storyboard rather than from (BaseChatViewController) self.view .

Start by comparing the Example ChattoApp and DemoChatViewController references with BaseChatViewController, then inspect how the storyboard currently instantiates the controller and its view. The desired outcome is a custom header configured from the storyboard rather than the existing BaseChatViewController self.view approach, while preserving the chat screen behavior.

Written by the indexing model from the issue text.