syntax_data: {"ast_node_type":"function","tokens":[{"end":61,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn is_bound_var_in_guard(&self, id: LocalVarId) -> bool {
context_after:         self.guard_context.iter().any(|frame| frame.locals.iter().any(|local| local.id == id))