syntax_data: {"ast_node_type":"variable","tokens":[{"end":54,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                     let self_ty = trait_ref.self_ty();
context_before:                 if tcx.is_lang_item(trait_item_id, LangItem::FnPtrAddr) {
context_after:                     if !matches!(self_ty.kind(), ty::FnPtr(..)) {