```ruby
AddressValidator.configure do |config|
  config.key = 'insert_valid_key'
  config.username = 'insert_valid_username'
  config.password = 'insert_valid_password'
end
```

Add setting to config to get multiple results from UPS
user
```ruby
AddressValidator.configure do |config|
  config.key = 'insert_valid_key'
  config.username = 'insert_valid_username'
  config.password = 'insert_valid_password'
  config.maximum_list_size = 5 # How many results do you want from UPS?
end
```
assistant