In short, the contribution is reviewed by two JabRef developers. Typically, they have constructive feedback on their contribution. This means, that the contributors get comments on their contribution enabling them to level-up their coding skill. Incorporating improvements takes time, too. The benefit is two-fold: a) contributors improve their coding skills and b) JabRef's code quality improves. All in all, we ask to respect the aims of the JabRef team and to reserve time to incorporate the reviewer's comments.