'Initialize the InstalledAddOnContext
:param Version version: Version that contains the resource
:param sid: The unique Installed Add-on Sid
:returns: twilio.rest.preview.marketplace.installed_add_on.InstalledAddOnContext
:rtype: twilio.rest.preview.marketplace.installed_add_on.InstalledAddOnContext'

def __init__(self, version, sid):

    super(InstalledAddOnContext, self).__init__(version)
    self._solution = {'sid': sid}
    self._uri = '/InstalledAddOns/{sid}'.format(**self._solution)
    self._extensions = None
