Function rustc_trait_selection::traits::wf::extend_cause_with_original_assoc_item_obligation

fn extend_cause_with_original_assoc_item_obligation<'tcx>(
    tcx: TyCtxt<'tcx>, 
    trait_ref: &TraitRef<'tcx>, 
    item: Option<&Item<'tcx>>, 
    cause: &mut ObligationCause<'tcx>, 
    pred: &Predicate<'tcx>, 
    trait_assoc_items: impl Iterator<Item = &'tcx AssocItem>
)