cl--transform-lambda is a compiled Lisp function in `cl-macs.el'.

(cl--transform-lambda FORM BIND-BLOCK)

Transform a function form FORM of name BIND-BLOCK.
BIND-BLOCK is the name of the symbol to which the function will be bound,
and which will be used for the name of the `cl-block' surrounding the
function's body.
FORM is of the form (ARGS . BODY).