def create(self, certificate_data, friendly_name=values.unset,<EOL>device_sid=values.unset):
data = values.of({<EOL>'<STR_LIT>': certificate_data,<EOL>'<STR_LIT>': friendly_name,<EOL>'<STR_LIT>': device_sid,<EOL>})<EOL>payload = self._version.create(<EOL>'<STR_LIT:POST>',<EOL>self._uri,<EOL>data=data,<EOL>)<EOL>return CertificateInstance(self._version, payload, fleet_sid=self._solution['<STR_LIT>'], )<EOL>
Create a new CertificateInstance

:param unicode certificate_data: The public certificate data.
:param unicode friendly_name: The human readable description for this Certificate.
:param unicode device_sid: The unique identifier of a Device to be authenticated.

:returns: Newly created CertificateInstance
:rtype: twilio.rest.preview.deployed_devices.fleet.certificate.CertificateInstance