User::getUserFields

static function getUserFields()
{
	if (is_null(static::$userUserFieldList))
	{
		static::$userUserFieldList = [];
		global $USER_FIELD_MANAGER;

		$fields = $USER_FIELD_MANAGER->GetUserFields("USER");

		foreach ($fields as $code => $field)
		{
			if (mb_strpos($code, static::$nameFieldFullPrefix) === 0)
			{
				static::$userUserFieldList[] = $code;
			}
		}
	}

	return static::$userUserFieldList;
}