lib/SteamCondenser/Community/GameInventory.php
public function getItemSchema() {
        if ($this->itemSchema == null) {
            $this->itemSchema = GameItemSchema::create($this->appId, self::$schemaLanguage);
        }

        return $this->itemSchema;
    }
public function getItemSchema() {
        if ($this->itemSchema == null) {
            $this->itemSchema = GameItemSchema::create($this->appId, self::$schemaLanguage);
        }

        return $this->itemSchema;
    }
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 \SteamCondenser\Exceptions\WebApiException on Web API errors