How increment the code coverage percent in Sonar Qube result for AEM Cloud?

I am using Adobe Cloud CI/CD build pipeline for my build process which is integrated with Sonar Qube.

As a code Model, I have a very simple POJO, with 3 attributes, @586265 annotation for each one, and getters and setters as usual.

When I push the code to remote/develop the SonarQube starts to test the code, then I can see the code coverage is under 50% all the time as shown in the below image.