// solely to ensure that the pods it selects are isolated by default).
  // This field is beta-level in 1.8
  // +optional
  repeated NetworkPolicyEgressRule egress = 3;

  // List of rule types that the NetworkPolicy relates to.
  // Valid options are ["Ingress"], ["Egress"], or ["Ingress", "Egress"].
  // If this field is not specified, it will default based on the existence of Ingress or Egress rules;

  // +optional
  repeated LabelSelectorRequirement matchExpressions = 2;
}

// A label selector requirement is a selector that contains values, a key, and an operator that
// relates the key and values.
message LabelSelectorRequirement {
  // key is the label key that the selector applies to.
  // +patchMergeKey=key
  // +patchStrategy=merge
  optional string key = 1;

  // This field is beta-level in 1.8
  // +optional
  repeated NetworkPolicyEgressRule egress = 3;

  // policyTypes is a list of rule types that the NetworkPolicy relates to.
  // Valid options are ["Ingress"], ["Egress"], or ["Ingress", "Egress"].
  // If this field is not specified, it will default based on the existence of ingress or egress rules;

  repeated NodeSelectorTerm nodeSelectorTerms = 1;
}

// A node selector requirement is a selector that contains values, a key, and an operator
// that relates the key and values.
message NodeSelectorRequirement {
  // The label key that the selector applies to.
  optional string key = 1;

  // Represents a key's relationship to a set of values.