Method __set

/**
 * Magic method to set values for feed properties.
 *
 * @param   string  $name   The name of the property.
 * @param   mixed   $value  The value to set for the property.
 *
 * @return  void
 *
 * @since   3.1.4
 */
public function __set($name, $value)
{
    // Ensure that setting a date always sets a Date instance.
    if (($name === 'updatedDate' || $name === 'publishedDate') && !$value instanceof Date) {
        $value = new Date($value);
    }
    // Validate that any authors that are set are instances of JFeedPerson or null.
    if ($name === 'author' && (!$value instanceof FeedPerson || $value === null)) {
        throw new \InvalidArgumentException(sprintf('%1$s "author" must be an instance of Joomla\\CMS\\Feed\\FeedPerson. %2$s given.', \get_class($this), \gettype($value) === 'object' ? \get_class($value) : \gettype($value)));
    }
    // Disallow setting categories or contributors directly.
    if (\in_array($name, array('categories', 'contributors'))) {
        throw new \InvalidArgumentException(sprintf('Cannot directly set %1$s property "%2$s".', \get_class($this), $name));
    }
    $this->properties[$name] = $value;
}