{
  "$schema": "http://json-schema.org/schema#", 
  "type": "object", 
  "description": "VolumeNodeAffinity defines constraints that limit what nodes this volume can be accessed from.", 
  "properties": {
    "required": {
      "description": "Required specifies hard node constraints that must be met.", 
      "$ref": "_definitions.json#/definitions/io.k8s.api.core.v1.NodeSelector"
    }
  }
}