No information about file shortcut

[UtechtDustin]

I often uses BinaryFileResponse's and every time i get the info message

Symfony: 'file' shortcut can be used 

But i don't know what this means, i also don't find any information about a file shortcut for symfony on google or on the documentation of symfony. At general it would be nice if we get a example how the improvement could look like.

[UtechtDustin]

Found it, the file shortcut is the file function of the extended AbstractController.