code: def create_or_update_proxy(self, proxy):
          
          content = self._serialize.body(proxy, 'Proxy')
          response = self._send(http_method='PUT',
                                location_id='ec1f4311-f2b4-4c15-b2b8-8990b80d2908',
                                version='5.0-preview.2',
                                content=content)
          return self._deserialize('Proxy', response)
docs: CreateOrUpdateProxy.
          [Preview API]
          :param :class:`<Proxy> <azure.devops.v5_0.core.models.Proxy>` proxy:
          :rtype: :class:`<Proxy> <azure.devops.v5_0.core.models.Proxy>`