#ruby can change this
```ruby
def response
command = @client.gets&.strip
case command
when "pause" then @countdown.pause
when "resume" then @countdown.resume
when "stop" then @countdown.stop
when "status" then @countdown.status
else raise ArgumentError "ERR: unknown command"
end
end
```
by this
```ruby
def response
command = @client.gets&.strip
@countdown.send command
end
```
and this is awesome
@codeDude using `send` or even `public_send` looks like a good idea until it is not, a sanitation/restriction of which method can be called should be preffered. The reasoning behind this, and specially if that `gets` is an external input, is security: a method can be called and that might be not exactly what you meant, for example, if this is an ActiveRecord object, then the ` #destroy` method might be called, effectively deleting that particular entry in the database.
