syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"self.map_bound(|sig_tys|"}]}
source_snippet:         self.map_bound(|sig_tys| FnSig {
context_before:     pub fn with(self, hdr: FnHeader<I>) -> ty::Binder<I, FnSig<I>> {
context_after:             inputs_and_output: sig_tys.inputs_and_output,