syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"(ty::ImplSubject::Inherent(ty_a),"}]}
source_snippet:             (ty::ImplSubject::Inherent(ty_a), ty::ImplSubject::Inherent(ty_b)) => {
context_before:             }
context_after:                 let ty = Ty::relate(relation, ty_a, ty_b)?;