sp-dev-fx-webparts/samples/react-graph-personalemail/.yo-rc.json

{
  "@microsoft/generator-sharepoint": {
    "isCreatingSolution": true,
    "environment": "spo",
    "version": "1.6.0",
    "libraryName": "react-graph-personalemail",
    "libraryId": "08d71f2b-958d-4a90-8ecf-05d08063b537",
    "packageManager": "npm",
    "componentType": "webpart"
  }
}