lib/SteamCondenser/Community/Portal2/Portal2Inventory.php
public static function createInventory($steamId, $fetchNow = true, $bypassCache = false) {
        return parent::create(self::APP_ID, $steamId, $fetchNow, $bypassCache);
    }
public static function createInventory($steamId, $fetchNow = true, $bypassCache = false) {
        return parent::create(self::APP_ID, $steamId, $fetchNow, $bypassCache);
    }
This checks the cache for an existing inventory. If it exists it is
returned. Otherwise a new inventory is created.

@param string $steamId The 64bit Steam ID or vanity URL of the user
@param bool $fetchNow Whether the data should be fetched now
@param bool $bypassCache Whether the cache should be bypassed
@return Portal2Inventory The inventory created from the given options