syntax_data: {"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"print_indented!(self,"}]}
source_snippet:         print_indented!(self, format!("region_scope: {:?}", region_scope), depth_lvl + 1);
context_before:         print_indented!(self, format!("span: {:?}", span), depth_lvl + 1);
context_after:         print_indented!(self, format!("safety_mode: {:?}", safety_mode), depth_lvl + 1);