'Initialize the CountryInstance
:returns: twilio.rest.pricing.v1.voice.country.CountryInstance
:rtype: twilio.rest.pricing.v1.voice.country.CountryInstance'

def __init__(self, version, payload, iso_country=None):

    super(CountryInstance, self).__init__(version)
    self._properties = {'country': payload['country'], 'iso_country': payload['iso_country'], 'url': payload['url'], 'outbound_prefix_prices': payload.get('outbound_prefix_prices'), 'inbound_call_prices': payload.get('inbound_call_prices'), 'price_unit': payload.get('price_unit')}
    self._context = None
    self._solution = {'iso_country': (iso_country or self._properties['iso_country'])}
