'Initialize the RatePlanInstance
:returns: twilio.rest.wireless.v1.rate_plan.RatePlanInstance
:rtype: twilio.rest.wireless.v1.rate_plan.RatePlanInstance'

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

    super(RatePlanInstance, self).__init__(version)
    self._properties = {'sid': payload['sid'], 'unique_name': payload['unique_name'], 'account_sid': payload['account_sid'], 'friendly_name': payload['friendly_name'], 'data_enabled': payload['data_enabled'], 'data_metering': payload['data_metering'], 'data_limit': deserialize.integer(payload['data_limit']), 'messaging_enabled': payload['messaging_enabled'], 'voice_enabled': payload['voice_enabled'], 'national_roaming_enabled': payload['national_roaming_enabled'], 'national_roaming_data_limit': deserialize.integer(payload['national_roaming_data_limit']), 'international_roaming': payload['international_roaming'], 'international_roaming_data_limit': deserialize.integer(payload['international_roaming_data_limit']), 'date_created': deserialize.iso8601_datetime(payload['date_created']), 'date_updated': deserialize.iso8601_datetime(payload['date_updated']), 'url': payload['url']}
    self._context = None
    self._solution = {'sid': (sid or self._properties['sid'])}
