GenMarkdownTreeCustom has a way to a header (filePrepender arg), however there is not a first class way to add a footer.

Summary

The documentation "activate_announcer_on_command_failure" is not helpful for users as it misses information a

I know this question has been asked before, but the fix for it didn't apply to my code. The code is very simple, and I don't know what's happening.

What's supposed to happen is then when the button is pressed, it runs the hello() function, which adds a label to the screen saying You Pressed me!. But, an error pops up saying `AttributeError: 'NoneType' object has no attribute 'set_color_mode

result.on(
  success: { 
    greet: -> (first, last) { puts "Hi #{first} #{last}!" },
    print_name: -> (last, first) { puts "#{last}, #{first}!" }
  }
)

Original POC:

https://gist.github.com/serradura/499e403e64d53dfcb8c891dfff594e20

Once #150 is done, add a way to set default switches something like

manager.getContexts().setDefaultSwitch(Residence.class, "res,residence,r");