Detecting if there's no response?

[tetherit]

It seems there's no way to know if there was no response:

(dev)> response = client.lookup_by_woeid 123123123123
=> #<Weatherman::Response:0x007fee06bfd168 @document_root={"units"=>{"distance"=>"km", "pressure"=>"mb", "speed"=>"km/h", "temperature"=>"C"}}, @i18n=#<Weatherman::I18N:0x007fee06bfcb50 @language=nil>>
(dev)> response.location
NoMethodError: undefined method `size' for nil:NilClass
from /usr/local/lib/ruby/gems/2.3.0/bundler/gems/yahoo_weatherman-cf110fe4f25f/lib/yahoo_weatherman/response.rb:172:in `attribute'

Please add a way to check that there was no response, currently the methods just throw an exception from yahoo_weatherman which I have to rescue from.