syntax_data: {"ast_node_type":"function","tokens":[{"end":72,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn add_to_diag<G: EmissionGuarantee>(self, diag: &mut Diag<'_, G>) {
context_before: impl Subdiagnostic for Rust2024IncompatiblePatSugg {
context_after:         // Format and emit explanatory notes about default binding modes. Reversing the spans' order