<?php

namespace Illuminate\Session;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Session\SessionInterface as BaseSessionInterface;

interface SessionInterface extends BaseSessionInterface
{
    /**
     * Get the session handler instance.
     *
     * @return \SessionHandlerInterface
     */
    public function getHandler();

    /**
     * Determine if the session handler needs a request.
     *
     * @return bool
     */
    public function handlerNeedsRequest();

    /**
     * Set the request on the handler instance.
     *
     * @param  \Symfony\Component\HttpFoundation\Request  $request
     * @return void
     */
    public function setRequestOnHandler(Request $request);

    /**
     * Checks if an attribute exists.
     *
     * @param  string|array  $key
     *
     * @return bool
     */
    public function exists($key);
}

<?php

namespace Illuminate\Session;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Session\SessionInterface as BaseSessionInterface;

interface SessionInterface extends BaseSessionInterface
{
    /**
     * Get the session handler instance.
     *
     * @return \SessionHandlerInterface
     */
    public function getHandler();

    /**
     * Determine if the session handler needs a request.
     *
     * @return bool
     */
    public function handlerNeedsRequest();

    /**
     * Set the request on the handler instance.
     *
     * @param  \Symfony\Component\HttpFoundation\Request  $request
     * @return void
     */
    public function setRequestOnHandler(Request $request);

    /**
     * Checks if an attribute exists.
     *
     * @param  string|array  $key
     * @return bool
     */
    public function exists($key);
}

Remove extraneous whitespace in docblock
Remove extraneous whitespace in docblock
