case "GET", "HEAD", "OPTIONS", "TRACE":
			return true
		}
		// The Idempotency-Key, while non-standard, is widely used to
		// mean a POST or other request is idempotent. See
		// https://golang.org/issue/19943#issuecomment-421092421
		if r.Header.has("Idempotency-Key") || r.Header.has("X-Idempotency-Key") {
			return true
		}
	}
	return false
}

			toBinary(r1),
			toBinary(r),
		)
		return
	}

	// h and f should be the same
	// (repeated rounding should be idempotent)
	h := new(Float).SetMode(mode).SetPrec(prec).Set(f)
	if !alike(h, f) {
		t.Errorf("round %s (%d bits, %s) not idempotent: got %s and %s; want %s",
			toBinary(x), prec, mode,
			toBinary(h.int64()),
			toBinary(r1),
			toBinary(r),
		)
		return
	}
}

// request is idempotent and either has no body or has its [Request.GetBody]
// defined. HTTP requests are considered idempotent if they have HTTP methods
// GET, HEAD, OPTIONS, or TRACE; or if their [Header] map contains an
// "Idempotency-Key" or "X-Idempotency-Key" entry. If the idempotency key
// value is a zero-length slice, the request is treated as idempotent but the
// header is not sent on the wire.

  //
  // Applied only if Name is not specified.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#idempotency
  // +optional
  optional string generateName = 2;

  // Namespace defines the space within which each name must be unique. An empty namespace is

  //
  // Applied only if Name is not specified.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#idempotency
  // +optional
  optional string generateName = 2;

  // Namespace defines the space within which each name must be unique. An empty namespace is

	//
	// Applied only if Name is not specified.
	// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#idempotency
	// +optional
	GenerateName string `json:"generateName,omitempty" protobuf:"bytes,2,opt,name=generateName"`

	// Namespace defines the space within which each name must be unique. An empty namespace is

//
// For most messages, the message is marshalled using their marshal method,
// since their wire representation is idempotent. For clientHelloMsg and
// serverHelloMsg, we store the original wire representation of the message and
// use that for hashing, since unmarshal/marshal are not idempotent due to
// extension ordering and other malleable fields, which may cause differences
// between what was received and what we marshal.

	defer r.customStorageLock.Unlock()

	storageMap := r.customStorage.Load().(crdStorageMap)
	for _, crdInfo := range storageMap {
		for _, storage := range crdInfo.storages {
			// DestroyFunc have to be implemented in idempotent way,
			// so the potential race with r.tearDown() (being called
			// from a goroutine) is safe.
			storage.CustomResource.DestroyFunc()
		}
	}
}

	// if the object being admitted is modified by other admission plugins after the initial webhook call.
	// Webhooks that specify this option *must* be idempotent, and hence able to process objects they previously admitted.
	// Note:
	// * the number of additional invocations is not guaranteed to be exactly one.

  // post order gives a maximal clustering) holds.  Once the linear time
  // post-order scheme has been battle tested we can move this to happen only in
  // debug builds.
  VLOG(2) << "Checking idempotence";
  TF_ASSIGN_OR_RETURN(bool changed,
                      ForEachEdgeInPostOrder([&](Cluster* from, Cluster* to) {
                        return TryToContractEdge(from, to);
                      }));