RestActivityTable::validateProperties

static function validateProperties()
{
	return array(
		function($value, $primary, $row, Field $field) {
			$errorMsg = GetMessage("BPRAT_PROPERTIES_LENGTH_ERROR", array("#FIELD_TITLE#" => $field->getTitle()));
			return BinaryString::getLength(serialize($value)) < 65535 ? true : $errorMsg;
		}
	);
}