Targeting

{

  // Union field criteria can be only one of the following:
  "regions": {
    object (Regions)
  },
  "androidSdks": {
    object (AndroidSdks)
  },
  "allUsers": {
    object (AllUsers)
  }
  // End of list of possible types for union field criteria.

  // Union field target_versions can be only one of the following:
  "versionList": {
    object (AppVersionList)
  },
  "versionRange": {
    object (AppVersionRange)
  }
  // End of list of possible types for union field target_versions.
}