protected function prepare()
{
$this->call->setDate(new DateTime());
$this->call->setNonce($this->randomizer->getRandom(32));
if (!in_array($this->call->getMethod(), array('GET')) && count($this->call->getBody())) {
$serializedBody = $this->serializer->encode($this->call->getBody(), $this->call->getFormat());
$this->call->setFormattedBody($serializedBody);
$this->headers->addHeader(new ContentTypeHeader($this->call->getPath(".", false), $this->configuration->getFormat(), $this->call->getVersion()));
}
$this->headers->addHeader(new DateHeader($this->call->getDate()));
$this->headers->addHeader(new AcceptHeader($this->call->getPath(".", false), $this->configuration->getFormat(), $this->call->getVersion()));
$this->headers->addHeader(new AcceptLanguageHeader($this->call->getLanguage()));
$serializedHashData = $this->normalizer->normalizeForHasher($this->call, $this->headers);
$hmac = $this->hasher->getHash($serializedHashData, $this->configuration->getApiSecret());
$this->headers->addHeader(new XAuthHeader($this->configuration->getCustomerKey(), $this->configuration->getApiKey(), $hmac, $this->call->getNonce()));
}
