class Geocoder::Lookup::IpapiCom

def query_url(query)
  domain = configuration.api_key ? "pro.ip-api.com" : "ip-api.com"
  url_ = "#{protocol}://#{domain}/json/#{query.sanitized_text}"
  if (params = url_query_string(query)) && !params.empty?
    url_ + "?" + params
  else
    url_
  end
end