public static function getInstance()
{
if (!self::$_instance instanceof self) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Class constructor.
*
* @since 1.0.0
*/
public function __construct() {
$this->_wwp_wholesale_roles = WWP_Wholesale_Roles::getInstance();
$this->_wwp_custom_fields = WWP_Custom_Fields::getInstance();
$this->_wwp_wholesale_prices = WWP_Wholesale_Prices::getInstance();
}