syntax_data: {"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"self.rebind(p.with_self_ty(cx,"}]}
source_snippet:                 self.rebind(p.with_self_ty(cx, self_ty)).upcast(cx)
context_before:             ExistentialPredicate::Projection(p) => {
context_after:             }