I’ve read about the Pull Request tips that were in the link which Daniel sent to me. And I’ve created a branch in my repo, including ticket [RA-931 ]. Also I’ve configured my IDE as in the Developer’s guide and imported the openmrs-core into it and now I’m reading details in this link
Since people had conflicting views about this issue previously, you might want to discuss your solution and come to an agreement before you implement something.