How to launch a third party plugin and use methods with it in eclipse in my own code?

I'm doing a project to get the mutation score of each test I wrote, every time I change the input, I want to call the eclipse plugin called Pitclipse and return the mutation score corresponding to the input.

In fact this is an optimization problem where mutation score is the object function to be maximized, I want to find test cases with high mutation score.

Do you have any idea how to launch this third party plugin everytime I call it on my own code?