org-babel-spec-to-string
org-babel-spec-to-string is a compiled Lisp function in `ob-tangle.el'.
(org-babel-spec-to-string SPEC)
Insert SPEC into the current file.
Insert the source-code specified by SPEC into the current source
code file.  This function uses `comment-region' which assumes
that the appropriate major-mode is set.  SPEC has the form:
  (start-line file link source-name params body comment)