class Geocoder::Lookup::PcMiler

def valid_region_codes

https://developer.trimblemaps.com/restful-apis/location/single-search/single-search-api/#test-the-api-now 
def valid_region_codes
  # AF: Africa
  # AS: Asia
  # EU: Europe
  # NA: North America
  # OC: Oceania
  # SA: South America
  %w[AF AS EU NA OC SA]
end