syntax_data: {"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"ExistentialPredicate::Projection(p)"}]}
source_snippet:             ExistentialPredicate::Projection(p) => {
context_before:             ExistentialPredicate::Trait(tr) => self.rebind(tr).with_self_ty(cx, self_ty).upcast(cx),
context_after:                 self.rebind(p.with_self_ty(cx, self_ty)).upcast(cx)