syntax_data: {"ast_node_type":"function","tokens":[{"end":44,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn sig_as_fn_ptr_ty(self) -> I::Ty {
context_before:     // see `rustc_hir_analysis::check::closure`.
context_after:         self.split().closure_sig_as_fn_ptr_ty