syntax_data: {"ast_node_type":"function","tokens":[{"end":53,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn sig(self) -> ty::Binder<I, ty::FnSig<I>> {
context_before:     /// Extracts the signature from the closure.
context_after:         match self.sig_as_fn_ptr_ty().kind() {