syntax_data: {"ast_node_type":"variable","tokens":[{"end":79,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                     let Some(trait_item_def_id) = item.trait_item_def_id else {
context_before:                     let item = tcx.hir_impl_item(*item);
context_after:                         return Some((did, vec![]));