Dev:UIKBTree

UIKBTree is an undocumented class as of iOS 5.0 which represents iOS keyboard elements such as character key, shift key, delete key, language switch key and so on.

Types
More than one classification Apple has made to UIKBTree, here are known:

Generic Types
The list is determined by the method

This kind of type is specified when creating an instance of UIKBTree:

Display Types
The list is determined by the private C function

The display type is a property of any UIKBTree instance:

Interaction Types
The list is determined by the private C function

The interaction type is a property of any UIKBTree instance: Note (*): It was AcceptAutoCorrection prior to iOS 8.0