syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // like #92893 we might get variable with no scope.
context_before:         // Although there is almost always scope for given variable in corner cases
context_after:         if let Some(region_scope) = self.region_scope_tree.var_scope(var.0.local_id)