syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // We want upvars here not captures.
context_before:     fn convert_var(&mut self, var_hir_id: hir::HirId) -> ExprKind<'tcx> {
context_after:         // Captures will be handled in MIR.