Class PrepareBodyMiddleware

Prepares requests that contain a body, adding the Content-Length, Content-Type, and Expect headers.

Namespace: GuzzleHttp
Located at PrepareBodyMiddleware.php

Methods summary
`public`	# `__construct( callable $nextHandler )` Parameters `$nextHandler` Next handler to invoke.
`public GuzzleHttp\Promise\PromiseInterface`	# `__invoke( Psr\Http\Message\RequestInterface $request, array $options )` Parameters `$request` `$options` Returns `GuzzleHttp\Promise\PromiseInterface`