org-babel-comint-eval-invisibly-and-wait-for-file
org-babel-comint-eval-invisibly-and-wait-for-file is a compiled Lisp function in `ob-comint.el
'.
(org-babel-comint-eval-invisibly-and-wait-for-file BUFFER FILE STRING &optional PERIOD)
Evaluate STRING in BUFFER invisibly.
Don't return until FILE exists. Code in STRING must ensure that
FILE exists at end of evaluation.