class OffsitePayments::Integrations::AuthorizeNetSim::Helper

def billing_address(options)
  for setting in [:city, :state, :zip, :country, :po_num] do
    add_field 'x_' + setting.to_s, options[setting]
  end
  raise 'must use address1 and address2' if options[:address]
  add_field 'x_address', (options[:address1].to_s + ' ' + options[:address2].to_s).strip
end