json_schema: {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "title": "o2r-meta-ui",
      "description": "o2r metadata for ui widgets",
      "definitions": {
          "radiobuttons": {
              "type": "array",
              "items": {
                  "properties": {
                      "label": {
                          "type": "string"
                      },
                      "value": {
                          "type": "number"
                      },
                      "is_checked": {
                          "type": "boolean"
                      },
                      "parameter_type": {
                          "type": "string"
                      },
                      "reference_point": {
                          "type": "string"
                      }
                  }
              },
              "required": [
                  "label",
                  "value",
                  "is_checked",
                  "parameter_type",
                  "reference_point"
              ]
          },
          "checkboxes": {
              "type": "array",
              "items": {
                  "properties": {
                      "label": {
                          "type": "string"
                      },
                      "value": {
                          "type": "number"
                      },
                      "is_checked": {
                          "type": "boolean"
                      },
                      "parameter_type": {
                          "type": "string"
                      },
                      "reference_point": {
                          "type": "string"
                      }
                  }
              },
              "required": [
                  "label",
                  "value",
                  "is_checked",
                  "parameter_type",
                  "reference_point"
              ]
          },
          "sliders": {
              "type": "array",
              "items": {
                  "properties": {
                      "label": {
                          "type": "string"
                      },
                      "value": {
                          "type": "number"
                      },
                      "value_min": {
                          "type": "number"
                      },
                      "value_max": {
                          "type": "number"
                      },
                      "parameter_type": {
                          "type": "string"
                      },
                      "reference_point": {
                          "type": "string"
                      }
                  }
              },
              "required": [
                  "label",
                  "value",
                  "value_min",
                  "value_max",
                  "parameter_type",
                  "reference_point"
              ]
          }
      },
      "type": "object",
      "properties": {
          "radiobuttons": {
              "$ref": "#/definitions/radiobuttons"
          },
          "checkboxes": {
              "$ref": "#/definitions/checkboxes"
          },
          "sliders": {
              "$ref": "#/definitions/sliders"
          }
      },
      "required": []
  }