[Session] Add getFlashBag() to SessionInterface#12420

znerol wants to merge 1 commit intosymfony:mastersymfony/symfony:masterfrom

znerol-forks:add-missing-get-flash-bag-method-to-session-interfaceznerol-forks/symfony:add-missing-get-flash-bag-method-to-session-interfaceCopy head branch name to clipboard