On page Basic4android - Accessibility an Accessibility Library is documented:
This library includes several accessibility related methods.
The SetNextFocus methods allow you to explicitly set the focus order. This order is important when the user navigates your
application with a directional controller (such as D-Pad).
SetContentDescription sets the content that will be used by accessibility services such as TalkBack to describe the interface.
However it is not mentioned in the library list
Libraries - Basic4android Wiki
Perhaps it is no longer available?
This library includes several accessibility related methods.
The SetNextFocus methods allow you to explicitly set the focus order. This order is important when the user navigates your
application with a directional controller (such as D-Pad).
SetContentDescription sets the content that will be used by accessibility services such as TalkBack to describe the interface.
However it is not mentioned in the library list
Libraries - Basic4android Wiki
Perhaps it is no longer available?