/**
* Returns the item schema
*
* The item schema is fetched first if not done already
*
* @return GameItemSchema The item schema for the game this inventory belongs to
* @throws WebApiException on Web API errors
*/
public function getItemSchema()
{
if ($this->itemSchema == null) {
$this->itemSchema = GameItemSchema::create($this->appId, self::$schemaLanguage);
}
return $this->itemSchema;
}
