Function rustc_hir_typeck::method::suggest::print_disambiguation_help

fn print_disambiguation_help<'tcx>(
    tcx: TyCtxt<'tcx>,
    err: &mut Diag<'_>,
    source: SelfSource<'tcx>,
    args: Option<&'tcx [Expr<'tcx>]>,
    trait_ref: TraitRef<'tcx>,
    candidate_idx: Option<usize>,
    span: Span,
    item: AssocItem
) -> Option<String>