protected void modifyClassCase(Class classToModify, FieldRemoval removesField) {
Field fieldToRemove = DeltaJUtils.fieldByName(classToModify, removesField.getName());
if (fieldToRemove != null) classToModify.getFields().remove(fieldToRemove);
}
protected void addClonedField(Class classToModify, Field field) {
classToModify.getFields().add(EcoreUtil2.clone(field));
}