syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"diag.span_note(self.signature_span,"}]}
source_snippet:         diag.span_note(self.signature_span, fluent::mir_build_unsafe_fn_safe_body);
context_before:     fn add_to_diag<G: EmissionGuarantee>(self, diag: &mut Diag<'_, G>) {
context_after:         let body_start = self.body_span.shrink_to_lo();