public function isValid()
{
return parent::isValid() and isset($this->center, $this->radius);
}
/**
* Returns <code>true</code> if all constraints of this {@link CuboidSpace} are initialized, <code>false</code>
* otherwise.
*
* @return bool whether the {@link CuboidSpace} is valid.
*/
public function isValid()
{
return parent::isValid() and isset($this->x1, $this->x2, $this->y1, $this->y2, $this->z1, $this->z2, $this->levelName);
}