syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"AdtExprBase::DefaultFields(_)"}]}
source_snippet:             AdtExprBase::DefaultFields(_) => {
context_before:             }
context_after:                 print_indented!(self, "base: {{ defaulted fields }}", depth_lvl + 1);