syntax_data: {"ast_node_type":"variable","tokens":[{"end":43,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let var_hir_id = match place.base {
context_before:         // to the closure's parent.
context_after:             HirPlaceBase::Upvar(upvar_id) => upvar_id.var_path.hir_id,