syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if defined_opaque_types.is_empty() {
context_before:         let defined_opaque_types = cx.opaque_types_defined_by(body_def_id);
context_after:             TypingMode::non_body_analysis()