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));
  }