code: def create(self, unique_name, domain_suffix=values.unset):
          
          data = values.of({'UniqueName': unique_name, 'DomainSuffix': domain_suffix, })
  
          payload = self._version.create(
              'POST',
              self._uri,
              data=data,
          )
  
          return EnvironmentInstance(self._version, payload, service_sid=self._solution['service_sid'], )
docs: Create a new EnvironmentInstance
  
          :param unicode unique_name: The unique_name
          :param unicode domain_suffix: The domain_suffix
  
          :returns: Newly created EnvironmentInstance
          :rtype: twilio.rest.serverless.v1.service.environment.EnvironmentInstance