syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"BoundRegionKind::Named(def)"}]}
source_snippet:             BoundRegionKind::Named(def) => {
context_before:             BoundRegionKind::ClosureEnv => write!(f, "{:?}.Env", self.var),
context_after:                 write!(f, "{:?}.Named({:?})", self.var, def)