private function addContentType(RequestInterface $request, StreamInterface $body)
{
if (!($uri = $body->getMetadata('uri'))) {
return;
}
// Guess the content-type based on the stream's "uri" metadata value.
// The file extension is used to determine the appropriate mime-type.
if ($contentType = Mimetypes::getInstance()->fromFilename($uri)) {
$request->setHeader('Content-Type', $contentType);
}
}
