syntax_data: {"ast_node_type":"variable","tokens":[{"end":99,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if let Some(res) = tcx.selection_cache.get(&(infcx.typing_env(param_env), pred), tcx) {
context_before:         if self.can_use_global_caches(param_env, cache_fresh_trait_pred) {
context_after:                 return Some(res);