syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"StructurallyRelateAliases::No"}]}
source_snippet:                 StructurallyRelateAliases::No => {
context_before:                 StructurallyRelateAliases::Yes => structurally_relate_tys(relation, a, b),
context_after:                     relation.register_alias_relate_predicate(a, b);