syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if impl_trait_ref.is_some() && args.iter().any(|a| a.has_non_region_param()) {
context_before:         // and this isn't an inherent impl.
context_after:             self.path_generic_args(