syntax_data: {"ast_node_type":"function","tokens":[{"end":81,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn numeric_max_val(self, tcx: TyCtxt<'tcx>) -> Option<mir::Const<'tcx>> {
context_before:     /// or returns `None` if the type is not numeric.
context_after:         let typing_env = TypingEnv::fully_monomorphized();