</p>

<pre>
type T1[P T1[P]] …                    // illegal: T1 refers to itself
type T2[P interface{ T2[int] }] …     // illegal: T2 refers to itself
type T3[P interface{ m(T3[int])}] …   // illegal: T3 refers to itself
type T4[P T5[P]] …                    // illegal: T4 refers to T5 and
type T5[P T4[P]] …                    //          T5 refers to T4

  // When Node.Spec.ConfigSource is updated, the node checkpoints the associated
  // config payload to local disk, along with a record indicating intended
  // config. The node refers to this record to choose its config checkpoint, and
  // reports this record in Assigned. Assigned only updates in the status after
  // the record has been checkpointed to disk. When the Kubelet is restarted,