focusable property
final
If non-null, whether the node is able to hold input focus.
If focusable is set to false, then focused must not be true.
Input focus indicates that the node will receive keyboard events. It is not to be confused with accessibility focus. Accessibility focus is the green/black rectangular highlight that TalkBack/VoiceOver draws around the element it is reading, and is separate from input focus.
Implementation
final bool? focusable;