{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/IsNullCondition",
  "title": "IsNullCondition",
  "description": "Select points with null payload for a specified field",
  "type": "object",
  "required": [
    "is_null"
  ],
  "properties": {
    "is_null": {
      "$ref": "#/components/schemas/PayloadField"
    }
  }
}