Function rustc_trait_selection::traits::vtable_methods

pub(in traits) fn vtable_methods<'tcx>(
    tcx: TyCtxt<'tcx>, 
    trait_ref: PolyTraitRef<'tcx>
) -> &'tcx [Option<(DefId, SubstsRef<'tcx>)>]

Given a trait trait_ref, iterates the vtable entries that come from trait_ref, including its supertraits.