{"ast_node_type":"function","tokens":[{"end":67,"kind":"keyword","start":0,"text":"fn"}]}
fn default_fallback(tcx: TyCtxt<'_>) -> DivergingFallbackBehavior {
/// Returns the default fallback which is used when there is no explicit override via `#![never_type_options(...)]`.
    // Edition 2024: fallback to `!`