public function testGetBitcoinDepositAddress()
 {
     $address = $this->client->getBitcoinDepositAddress();
     $this->assert($address, instance_of, '\\IndependentReserve\\Object\\BitcoinDepositAddress');
     $this->verify($address->getBitcoinAddress(), matches_regex, '/[a-zA-Z0-9]{34}/');
     $this->verify(date, $address->getLastCheckedTimestamp(), is_after, time() - self::DAY);
     $this->verify(date, $address->getNextUpdateTimestamp(), is_after, time() - self::DAY);
 }