'Initialize the UsageInstance
:returns: twilio.rest.api.v2010.account.usage.UsageInstance
:rtype: twilio.rest.api.v2010.account.usage.UsageInstance'

def __init__(self, version, payload, account_sid):

    super(UsageInstance, self).__init__(version)
    self._context = None
    self._solution = {'account_sid': account_sid}
