{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "groups": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "name",
          "contents"
        ],
        "properties": {
          "name": {
            "type": "string"
          },
          "contents": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "beta": {
      "anyOf": [
        { "type": "boolean" },
        { "type": "null" }
      ]
    },
    "groups": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "name",
          "contents"
        ],
        "properties": {
          "name": {
            "type": "string"
          },
          "contents": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}

Add `beta` attribute to topic
Add `beta` attribute to topic

Topics can be in beta. Used the `finder` schema as an example.
