protected function getOptionMode(array $options = NULL)
{
if (TRUE === isset($options[self::OPTION_MODE])) {
if (self::MODE_APPEND === $options[self::OPTION_MODE] || self::MODE_PREPEND === $options[self::OPTION_MODE] || self::MODE_NONE === $options[self::OPTION_MODE]) {
return $options[self::OPTION_MODE];
}
}
return self::MODE_APPEND;
}