(let ((fmf (slot-value method 'fast-function)))
(unless fmf ; The :BEFORE SHARED-INITIALIZE method prevents this.
(error "~S doesn't seem to have a METHOD-FUNCTION." method))
(let ((fmf (slot-value method 'fast-function)))
(unless fmf ; The :BEFORE SHARED-INITIALIZE method prevents this.
(error "~S doesn't seem to have a METHOD-FUNCTION." method))