def __init__(self, version, account_sid, credential_list_sid, sid):
super(CredentialContext, self).__init__(version)<EOL>self._solution = {<EOL>'<STR_LIT>': account_sid,<EOL>'<STR_LIT>': credential_list_sid,<EOL>'<STR_LIT>': sid,<EOL>}<EOL>self._uri = '<STR_LIT>'.format(**self._solution)<EOL>
Initialize the CredentialContext

:param Version version: Version that contains the resource
:param account_sid: The unique id of the Account that is responsible for this resource.
:param credential_list_sid: The unique id that identifies the credential list that contains the desired credential
:param sid: The unique id that identifies the resource to fetch.

:returns: twilio.rest.api.v2010.account.sip.credential_list.credential.CredentialContext
:rtype: twilio.rest.api.v2010.account.sip.credential_list.credential.CredentialContext