syntax_data: {"ast_node_type":"function","tokens":[{"end":71,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn has_vars_bound_above(&self, binder: ty::DebruijnIndex) -> bool {
context_before:     /// hence are not bound by it).
context_after:         self.has_vars_bound_at_or_above(binder.shifted_in(1))