{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "MyContainer",
  "type": "object",
  "required": [
    "associated",
    "generic"
  ],
  "properties": {
    "associated": {
      "type": "string"
    },
    "generic": {
      "type": "null"
    }
  }
}