syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"diag.note(fluent::mir_build_non_exhaustive_type_note);"}]}
source_snippet:             diag.note(fluent::mir_build_non_exhaustive_type_note);
context_before:         if is_non_exhaustive {
context_after:         } else {