syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// instantiation in terms of what happens with bound regions.
context_before:     /// poly-trait-ref holds. This is slightly different from a normal
context_after:     fn instantiate_supertrait(self, cx: I, trait_ref: ty::Binder<I, ty::TraitRef<I>>) -> Self;