sp-dev-fx-webparts/samples/react-custompropertypanecontrols/config/package-solution.json

{
  "solution": {
    "name": "react-custompropertypanecontrols-client-side-solution",
    "id": "21ba0db9-71ef-4f6b-8463-ce29e77e19f4",
    "version": "2.0.1.0"
  },
  "paths": {
    "zippedPackage": "solution/react-custompropertypanecontrols.sppkg"
  }
}