{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/MessageContentChartObject",
  "title": "MessageContentChartObject",
  "allOf": [
    {
      "$ref": "#/components/schemas/MessageContent"
    },
    {
      "title": "Chart",
      "type": "object",
      "description": "The chart specification that is part of a message.",
      "properties": {
        "chart_spec": {
          "type": "string"
        }
      },
      "required": [
        "chart_spec"
      ]
    }
  ]
}