def adrs_str(model, adrs_prefix)
      result = ''
      for adrs_element in ['prefecture', 'city', 'other', 'bldg'] do
        result << adrs_str_sub(model, adrs_prefix, adrs_element)
      end
      result
    end
def adrs_str(model, adrs_prefix)
      result = ''
      for adrs_element in ['prefecture', 'city', 'other', 'bldg'] do
        result << adrs_str_sub(model, adrs_prefix, adrs_element)
      end
      result
    end
model & adrs_prefix -> address string