schema.json

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "schema.json#",
  "title": "Versioning Indicators Extension",
  "description": "STAC Versioning Indicators Extension for STAC Items or STAC Collections.",
  "oneOf": [
    {
      "allOf": [
        {
          "$ref": "../../../item-spec/json-schema/item.json"
        },
        {
          "type": "object",
          "required": [
            "properties"
          ],
          "properties": {
            "properties": {
              "$ref": "#/definitions/version_extension"
            }
          }
        }
      ]
    },
    {
      "allOf": [
        {
          "$ref": "../../../collection-spec/json-schema/collection.json"
        },
        {
          "$ref": "#/definitions/version_extension"
        }
      ]
    }
  ],
  "definitions": {
    "version_extension": {
      "type": "object",
      "required": [
        "version"
      ],
      "properties": {
        "version": {
          "type": "string",
          "title": "Version"
        }, 
        "deprecated": {
          "type": "boolean", 
          "title": "Deprecated",
          "default": false
        }
      }
    }
  }
}