venv/share/jupyter/lab/schemas/@jupyterlab/settingeditor-extension/form-ui.json

{
  "title": "Settings Editor Form UI",
  "description": "Settings editor form ui settings.",
  "properties": {
    "settingEditorType": {
      "title": "Type of editor for the setting.",
      "description": "Set the type of editor to use while editing your settings.",
      "enum": ["json", "ui"],
      "default": "ui"
    }
  },
  "additionalProperties": false,
  "type": "object"
}