'Initialize the InstalledAddOnExtensionContext
:param Version version: Version that contains the resource
:param installed_add_on_sid: The installed_add_on_sid
:param sid: The unique Extension Sid
:returns: twilio.rest.preview.marketplace.installed_add_on.installed_add_on_extension.InstalledAddOnExtensionContext
:rtype: twilio.rest.preview.marketplace.installed_add_on.installed_add_on_extension.InstalledAddOnExtensionContext'

def __init__(self, version, installed_add_on_sid, sid):

    super(InstalledAddOnExtensionContext, self).__init__(version)
    self._solution = {'installed_add_on_sid': installed_add_on_sid, 'sid': sid}
    self._uri = '/InstalledAddOns/{installed_add_on_sid}/Extensions/{sid}'.format(**self._solution)
