private void deleteDomain() {
    try {
        ProjectAccessor projectAccessor = AstahAPI.getAstahAPI().getProjectAccessor();
        INamedElement[] elements = projectAccessor.findElements(IERDomain.class);
        ITransactionManager transactionManager = projectAccessor.getTransactionManager();
        transactionManager.beginTransaction();
        for (INamedElement element : elements) {
            projectAccessor.getModelEditorFactory().getERModelEditor().delete(element);
        }
        transactionManager.endTransaction();
    } catch (ClassNotFoundException | ProjectNotFoundException | InvalidEditingException e) {
        throw new RuntimeException(e);
    }

}