"optional": true,
                    "path": "pathValue"
                  }
                }
              ],
              "defaultMode": 2
            },
            "portworxVolume": {
              "volumeID": "volumeIDValue",
              "fsType": "fsTypeValue",
              "readOnly": true
            },
            "scaleIO": {
              "gateway": "gatewayValue",

                    "optional": true,
                    "path": "pathValue"
                  }
                }
              ],
              "defaultMode": 2
            },
            "portworxVolume": {
              "volumeID": "volumeIDValue",
              "fsType": "fsTypeValue",
              "readOnly": true
            },
            "scaleIO": {
              "gateway": "gatewayValue",

      server: serverValue
    persistentVolumeClaim:
      claimName: claimNameValue
      readOnly: true
    photonPersistentDisk:
      fsType: fsTypeValue
      pdID: pdIDValue
    portworxVolume:
      fsType: fsTypeValue
      readOnly: true
      volumeID: volumeIDValue
    projected:
      defaultMode: 2
      sources:
      - clusterTrustBundle:
          labelSelector:

	if in.PhotonPersistentDisk != nil {
		in, out := &in.PhotonPersistentDisk, &out.PhotonPersistentDisk
		*out = new(PhotonPersistentDiskVolumeSource)
		**out = **in
	}
	if in.PortworxVolume != nil {
		in, out := &in.PortworxVolume, &out.PortworxVolume
		*out = new(PortworxVolumeSource)
		**out = **in
	}
	if in.ScaleIO != nil {
		in, out := &in.ScaleIO, &out.ScaleIO
		*out = new(ScaleIOPersistentVolumeSource)

	if in.PhotonPersistentDisk != nil {
		in, out := &in.PhotonPersistentDisk, &out.PhotonPersistentDisk
		*out = new(PhotonPersistentDiskVolumeSource)
		**out = **in
	}
	if in.PortworxVolume != nil {
		in, out := &in.PortworxVolume, &out.PortworxVolume
		*out = new(PortworxVolumeSource)
		**out = **in
	}
	if in.ScaleIO != nil {
		in, out := &in.ScaleIO, &out.ScaleIO
		*out = new(ScaleIOPersistentVolumeSource)

		}
	}
	if source.PortworxVolume != nil {
		if numVolumes > 0 {
			allErrs = append(allErrs, field.Forbidden(fldPath.Child("portworxVolume"), "may not specify more than 1 volume type"))
		} else {
			numVolumes++
			allErrs = append(allErrs, validatePortworxVolumeSource(source.PortworxVolume, fldPath.Child("portworxVolume"))...)
		}
	}
	if source.AzureDisk != nil {

	out.AzureDisk = (*core.AzureDiskVolumeSource)(unsafe.Pointer(in.AzureDisk))
	out.PhotonPersistentDisk = (*core.PhotonPersistentDiskVolumeSource)(unsafe.Pointer(in.PhotonPersistentDisk))
	out.PortworxVolume = (*core.PortworxVolumeSource)(unsafe.Pointer(in.PortworxVolume))
	out.ScaleIO = (*core.ScaleIOPersistentVolumeSource)(unsafe.Pointer(in.ScaleIO))
	out.Local = (*core.LocalVolumeSource)(unsafe.Pointer(in.Local))

	Projected *ProjectedVolumeSource `json:"projected,omitempty" protobuf:"bytes,26,opt,name=projected"`
	// portworxVolume represents a portworx volume attached and mounted on kubelets host machine
	// +optional
	PortworxVolume *PortworxVolumeSource `json:"portworxVolume,omitempty" protobuf:"bytes,24,opt,name=portworxVolume"`
	// scaleIO represents a ScaleIO persistent volume attached and mounted on Kubernetes nodes.
	// +optional

  optional PhotonPersistentDiskVolumeSource photonPersistentDisk = 17;

  // portworxVolume represents a portworx volume attached and mounted on kubelets host machine
  // +optional
  optional PortworxVolumeSource portworxVolume = 18;

  // scaleIO represents a ScaleIO persistent volume attached and mounted on Kubernetes nodes.
  // +optional

	PhotonPersistentDisk *PhotonPersistentDiskVolumeSource
	// Items for all in one resources secrets, configmaps, and downward API
	Projected *ProjectedVolumeSource
	// PortworxVolume represents a portworx volume attached and mounted on kubelet's host machine
	// +optional
	PortworxVolume *PortworxVolumeSource
	// ScaleIO represents a ScaleIO persistent volume attached and mounted on Kubernetes nodes.
	// +optional
	ScaleIO *ScaleIOVolumeSource