Javascript API changes in 8.0.0

Hello, in version 8.0.0 there were several changes of js API. I want to ask, where can I find some more information about changes/usages of new API.
For example our code uses method "getTabView" from class “zimbraMail.share.view.dialog.ZmAttachDialog”.
Unfortunately this method was removed in new API and I am not able to find some information about which method/construction replaced this one or how to
recreate our code. Thank you for any help.