"Invalid API key"

{
  "error": {
    "code": "FORBIDDEN",
    "message": "Deletion protection is enabled for this index. Disable deletion protection before retrying."
  },
  "status": 403
}

{
  "error": {
    "code": "NOT_FOUND",
    "message": "Index example-index not found."
  },
  "status": 404
}

{
  "error": {
    "code": "FAILED_PRECONDITION",
    "message": "Unable to delete an index. There are pending collections for this index: ['test-collection']"
  },
  "status": 412
}

{
  "error": {
    "code": "UNKNOWN",
    "message": "Internal server error"
  },
  "status": 500
}