syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"Ok(relation.relate(a_ty,"}]}
source_snippet:                 Ok(relation.relate(a_ty, b_ty)?.into())
context_before:             (ty::GenericArgKind::Type(a_ty), ty::GenericArgKind::Type(b_ty)) => {
context_after:             }