Escape :end: inside #+begin_example

[Max Nikulin]

Hi,

is there a way to quote a drawer inside a literal example that resides 
in another drawer? Leading comma ",:end:", unlike for ",* Heading" or 
",#+end_src", is not stripped on export or C-c ' (`org-edit-special')

:drawer:
#+begin_src elisp
  ":src:
  %s
  :end:
  "
#+end_src
:end: