Description

In the RequestStack.php the property $requests is marked as private, which makes it impossible to operate with it in children classes.

Will be good to change it to protected to allow interaction with it in children's classes. For example, for my project, I need an additional function to clear (reset) the list of all requests, without popping-out one by one via pop(), and can't do it now via extending Symfony's RequestStack, because of the property is private.

Example

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