syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"closure_def_id:"}]}
source_snippet:                 closure_def_id: self.body_owner,
context_before:             ExprKind::UpvarRef {
context_after:                 var_hir_id: LocalVarId(var_hir_id),