protected function _getConditionsForEmployee($id = null) {
		$conditions = [];
		if (empty($id)) {
			return $conditions;
		}

		$id = (string)$id;
		if (ctype_digit($id)) {
			$conditions[$this->alias . '.id'] = $id;
		} elseif (isGuid($id)) {
			$conditions[$this->alias . '.' . CAKE_LDAP_LDAP_ATTRIBUTE_OBJECT_GUID] = $id;
		} else {
			$conditions[$this->alias . '.' . CAKE_LDAP_LDAP_ATTRIBUTE_DISTINGUISHED_NAME] = $id;
		}

		return $conditions;
	}