Speed up models creation: application to JSON/MSE parsing

Context In order to be able to work with Moose there is a prerequisite we cannot avoid: we need a model to analyze. This can be archieved in 2 principal ways: Importing an existing JSON/MSE file containing a model Importing a model via a Moose importer such as the Pharo importer or Python importer While doing this, we create a lot of entities and set a lot of relations. But this can take some…