public static function print_menu_in_admin_bar_field()
        {
            $field_name = 'menu_in_admin_bar';
            printf('<select id="%1$s" name="nelioab_settings[%1$s]" %2$s>', $field_name, self::get_basic_details());
            ?>
				<option value='1'><?php 
            _e('Show «Nelio A/B Testing» Menu in Admin Bar', 'nelioab');
            ?>
</option>
				<option value='0'<?php 
            if (!NelioABSettings::is_menu_enabled_for_admin_bar()) {
                echo ' selected="selected"';
            }
            ?>
><?php 
            _e('Hide «Nelio A/B Testing» Menu from Admin Bar', 'nelioab');
            ?>
</option>
			</select>
			</select>
			<div class="the-descr" style="display:none;"><span class="description"><?php 
            _e('When browsing your site as an admin, the plugin adds a «Nelio A/B Testing» entry in the top bar, which includes some shortcuts to common A/B Testing functions.', 'nelioab');
            ?>
</span></div><?php 
        }
 /**
  * It creates a new instance of this controller.
  *
  * In principle, this class should be used as if it implemented the
  * `singleton` pattern.
  *
  * @return NelioABController a new instance of this class.
  *
  * @see self::init
  * @since 1.0.10
  */
 public function __construct()
 {
     $this->queried_post_id = false;
     $this->controllers = array();
     $this->tracking_script_params = array();
     require_once NELIOAB_EXP_CONTROLLERS_DIR . '/alternative-experiment-controller.php';
     $this->controllers['alt-exp'] = new NelioABAlternativeExperimentController();
     // Iconography and Menu bar
     add_action('admin_bar_init', array($this, 'add_custom_styles'), 95);
     if (NelioABSettings::is_menu_enabled_for_admin_bar()) {
         add_action('admin_bar_menu', array($this, 'create_nelioab_admin_bar_menu'), 40);
         add_action('admin_bar_menu', array($this, 'create_nelioab_admin_bar_quickexp_option'), 999);
     }
     if (isset($_GET['nelioab_preview_css'])) {
         add_action('wp_footer', array(&$this->controllers['alt-exp'], 'preview_css'));
     }
 }