syntax_data: {"ast_node_type":"variable","tokens":[{"end":98,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let cause = if tcx.is_lang_item(parent_trait_pred.def_id(), LangItem::CoerceUnsized) {
context_before:         for (index, (predicate, span)) in predicates.into_iter().enumerate() {
context_after:                 cause.clone()