/**
* Whether a offset exists
* @link http://php.net/manual/en/arrayaccess.offsetexists.php
*
* @param mixed $offset <p>
* An offset to check for.
* </p>
*
* @return boolean true on success or false on failure.
* </p>
* <p>
* The return value will be casted to boolean if non-boolean was returned.
* @since 5.0.0
*/
public function offsetExists($offset)
{
return $this->fields->offsetExists($offset);
}
