{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":".eq(DefineOpaqueTypes::Yes,"}]}
                        .eq(DefineOpaqueTypes::Yes, method.sig.inputs()[idx + 1], arg_ty)
                        .at(&ObligationCause::dummy(), self.param_env)
                        .ok()?;