{
 "contains": {
  "properties": {
   "Essential": {
    "oneOf": [
     {
      "enum": [
       true,
       "true",
       "True"
      ]
     },
     {
      "type": "object"
     }
    ]
   }
  },
  "required": [
   "Essential"
  ]
 },
 "minItems": 1
}
