code: def get(self, sid):
          
          return VariableContext(
              self._version,
              service_sid=self._solution['service_sid'],
              environment_sid=self._solution['environment_sid'],
              sid=sid,
          )
docs: Constructs a VariableContext
  
          :param sid: The sid
  
          :returns: twilio.rest.serverless.v1.service.environment.variable.VariableContext
          :rtype: twilio.rest.serverless.v1.service.environment.variable.VariableContext