syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"Some(self.variances_of(def_id))"}]}
source_snippet:                     Some(self.variances_of(def_id))
context_before:                 if self.is_impl_trait_in_trait(def_id) {
context_after:                 } else {