def create_napp(cls, meta_package=False):
        templates_path = SKEL_PATH / 'napp-structure/username/napp'
        ui_templates_path = os.path.join(templates_path, 'ui')
        username = None
        napp_name = None
        print('--------------------------------------------------------------')
        print('Welcome to the bootstrap process of your NApp.')
        print('--------------------------------------------------------------')
        print('In order to answer both the username and the napp name,')
        print('You must follow this naming rules:')
        print(' - name starts with a letter')
        print(' - name contains only letters, numbers or underscores')
        print(' - at least three characters')
        print('--------------------------------------------------------------')
        print('')
        while not cls.valid_name(username):
            username = input('Please, insert your NApps Server username: ')
        while not cls.valid_name(napp_name):
            napp_name = input('Please, insert your NApp name: ')
        description = input('Please, insert a brief description for your'
                            'NApp [optional]: ')
        if not description:
            description = '
        context = {'username': username, 'napp': napp_name,
                   'description': description}
        os.makedirs(username, exist_ok=True)
        with open(os.path.join(username, '__init__.py'), 'w') as init_file:
init_file.write(f'"')
        os.makedirs(os.path.join(username, napp_name))
        templates = os.listdir(templates_path)
        templates.remove('ui')
        templates.remove('openapi.yml.template')
        if meta_package:
            templates.remove('main.py.template')
            templates.remove('settings.py.template')
        for tmp in templates:
            fname = os.path.join(username, napp_name,
                                 tmp.rsplit('.template')[0])
            with open(fname, 'w') as file:
                content = cls.render_template(templates_path, tmp, context)
                file.write(content)
        if not meta_package:
            NAppsManager.create_ui_structure(username, napp_name,
                                             ui_templates_path, context)
        print()
        print(f'Congratulations! Your NApp has been bootstrapped!\nNow you '
              'can go to the directory {username}/{napp_name} and begin to '
              'code your NApp.')
        print('Have fun!')