// domain-prefixed path no more than 250 characters in length, e.g.
  // "acme.io/ingress-controller". This field is immutable.
  optional string controller = 1;

  // parameters is a link to a custom resource containing additional
  // configuration for the controller. This is optional if the controller does
  // not require extra parameters.
  // +optional

  // For many clients the singular form of the resource will be more understandable to users reading messages and should be used when integrating the name of the resource into a sentence.
  // The command line tool kubectl, for example, allows use of the singular resource name in place of plurals.
  // The singular form of a resource should always be an optional element - when in doubt use the canonical resource name.

  // domain-prefixed path no more than 250 characters in length, e.g.
  // "acme.io/ingress-controller". This field is immutable.
  optional string controller = 1;

  // parameters is a link to a custom resource containing additional
  // configuration for the controller. This is optional if the controller does
  // not require extra parameters.
  // +optional

  // As Kubernetes 1.15 doesn't support this field, drivers can only support one mode when
  // deployed on such a cluster and the deployment determines which mode that is, for example
  // via a command line parameter of the driver.
  //
  // This field is immutable.
  //
  // +optional
  optional bool podInfoOnMount = 2;

  // volumeLifecycleModes defines what kind of volumes this CSI volume driver supports.

  // line breaks. The message must not contain line breaks.
  // If unset, the message is "failed rule: {Rule}".
  // e.g. "must be a URL with the host matching spec.host"
  // If the Expression contains line breaks. Message is required.
  // The message must not contain line breaks.
  // If unset, the message is "failed Expression: {Expression}".
  // +optional

// EndpointAddress is a tuple that describes single IP address.
// +structType=atomic
message EndpointAddress {
  // The IP of this endpoint.
  // May not be loopback (127.0.0.0/8 or ::1), link-local (169.254.0.0/16 or fe80::/10),
  // or link-local multicast (224.0.0.0/24 or ff02::/16).
  optional string ip = 1;

  // The Hostname of this endpoint
  // +optional
  optional string hostname = 3;

// +k8s:deepcopy-gen=true
// +k8s:openapi-gen=true
message Quantity {
  optional string string = 1;
}

// QuantityValue makes it possible to use a Quantity as value for a command
// line parameter.
//
// +protobuf=true
// +protobuf.embed=string
// +protobuf.options.marshal=false
// +protobuf.options.(gogoproto.goproto_stringer)=false
// +k8s:deepcopy-gen=true
message QuantityValue {

  // As Kubernetes 1.15 doesn't support this field, drivers can only support one mode when
  // deployed on such a cluster and the deployment determines which mode that is, for example
  // via a command line parameter of the driver.
  //
  // This field is immutable.
  //
  // +optional
  optional bool podInfoOnMount = 2;

  // volumeLifecycleModes defines what kind of volumes this CSI volume driver supports.