semantic-stickyfunc-fetch-stickyline
semantic-stickyfunc-fetch-stickyline is a compiled Lisp function in `util-modes.el
'.
(semantic-stickyfunc-fetch-stickyline)
Make the function at the top of the current window sticky.
Capture its function declaration, and place it in the header line.
If there is no function, disable the header line.