Using Ruby.

#use this if you want to create your code on you computer the class of the node is in the description

The the Node class is not in the description.

When running "Test", I get an unexpected error:

Response received but no data was written to STDOUT or STDERR.

Even when I tried with a very simple solution that's wrong but should not "break":

def loop_size(node)
  puts "Hello"
  0
end