Nebras Nassar developed EMF Refactor to support new query languages such as EMFQuery and EOL for 5 years ago. Hi is working now on developing a new version of EMF Refactor. Additionally, he has published research projects based on the Eclipse Modeling Framework such as EMF Repair [1] for repairing EMF models automatically or semi-interactively, and NasTool [1] for deriving model metrics from meta-models. He has a high proficiency and knowledge about serval Eclipse projects used in his projects such as EMF, Henshin, OCL and JET (Java Emitter Templates).
[1] https://www.uni-marburg.de/fb12/arbeitsgruppen/swt/nebras-nassar?languag...