syntax_data: {"ast_node_type":"function","tokens":[{"end":44,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn new_bool(tcx: TyCtxt<'tcx>) -> Self {
context_before: impl<'tcx> rustc_type_ir::inherent::Ty<TyCtxt<'tcx>> for Ty<'tcx> {
context_after:         tcx.types.bool