Deliverable D2.1 Model Extensions in a Harmonized Programming Environment 2013/in Deliverables C. Aymanns, F. Caccioli, F. Corsi, F. Lillo, G. Iori, J. D. Farmer, J. Grazzini, J. Porter, O. Bochmann, P. Klimek, S. Poledna, S. Thurner /This deliverable summarizes the work that has been done in order to generate model extensions in a harmonized programming environment