Function rustc_hir_analysis::check::fn_sig_suggestion

fn fn_sig_suggestion<'tcx>(
    tcx: TyCtxt<'tcx>,
    sig: FnSig<'tcx>,
    ident: Ident,
    predicates: impl IntoIterator<Item = (Clause<'tcx>, Span)>,
    assoc: AssocItem
) -> String

Return placeholder code for the given function.