def location(key)
      location = locations.select { |l| l[:fulfillment_location] == key }.first

      return {} if location.nil?
      location
    end
def location(key)
      location = locations.select { |l| l[:fulfillment_location] == key }.first

      return {} if location.nil?
      location
    end
Finds a location by +FulfillmentLocation+.

   result.location('WineShipping')[:supplier] #=> 'LOCATION-SUPPLIER'