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<?php
namespace Http\Message;
use Psr\Http\Message\StreamInterface;
/**
* Factory for PSR-7 Stream.
*
* @author Márk Sági-Kazár <mark.sagikazar@gmail.com>
*/
interface StreamFactory
{
/**
* Creates a new PSR-7 stream.
*
* @param string|resource|StreamInterface|null $body
*
* @return StreamInterface
*
* @throws \InvalidArgumentException If the stream body is invalid.
* @throws \RuntimeException If creating the stream from $body fails.
*/
public function createStream($body = null);
}