help--key-binding-keymap
help--key-binding-keymap is a compiled Lisp function in `help.el
'.
(help--key-binding-keymap KEY &optional ACCEPT-DEFAULT NO-REMAP POSITION)
Return a keymap holding a binding for KEY within current keymaps.
The effect of the arguments KEY, ACCEPT-DEFAULT, NO-REMAP and
POSITION is as documented in the function `key-binding'.