Dependency on a non-existent service.

I have created a piugin named SwagMasterAPI. I have to get some products from different API. But when I try to add it to the service I am getting following error:

The service "SwagMasterApi\Service\CarService" has a dependency on a non-existent service "MasterDataApi\Model\Api".

Here are the files I have created.

carService.php

 use MasterApi\Model\Api; 

 class CarService {

 public function \_\_construct(Api $api) { $this-\>api = $api; } 

services.xml

   

 

Problem