controllerContext.InformerFactory.Core().V1().PersistentVolumes(),
			csiNodeInformer,
			csiDriverInformer,
			controllerContext.InformerFactory.Storage().V1().VolumeAttachments(),
			plugins,
			GetDynamicPluginProber(controllerContext.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration),
			controllerContext.ComponentConfig.AttachDetachController.DisableAttachDetachReconcilerSync,

		return nil, nil
	}

	attachID := getAttachmentName(handle, driver, nodeName)

	// search for attachment by VolumeAttachment.Spec.Source.PersistentVolumeName
	attachment, err := client.StorageV1().VolumeAttachments().Get(context.TODO(), attachID, meta.GetOptions{})
	if err != nil {
		return nil, err // This err already has enough context ("VolumeAttachment xyz not found")
	}

	if attachment == nil {

  // +optional
  optional .k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;

  // items is the list of VolumeAttachments
  repeated VolumeAttachment items = 2;
}

// VolumeAttachmentSource represents a volume that should be attached.
// Right now only PersistenVolumes can be attached via external attacher,

  // +optional
  optional .k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;

  // items is the list of VolumeAttachments
  repeated VolumeAttachment items = 2;
}

// VolumeAttachmentSource represents a volume that should be attached.
// Right now only PersistenVolumes can be attached via external attacher,

	// +optional
	metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`

	// items is the list of VolumeAttachments
	Items []VolumeAttachment `json:"items" protobuf:"bytes,2,rep,name=items"`
}

// VolumeAttachmentSpec is the specification of a VolumeAttachment request.
type VolumeAttachmentSpec struct {