self::API_SECRET, 'Content-Type' => 'application/json', ]; $client = new Client(['base_uri' => self::RPC_URL, 'headers' => $headers]); $trc20Wallet = new Trc20Sdk($client, self::CONTRACT_ADDRESS); $this->sdk = $trc20Wallet; } function getHandler(): Trc20Sdk { return $this->sdk; } }