private void LegacyCleanup()
 {
     MoPubUpgradeMigration.DoSDKMigration();
     legacyMoPub = MoPubUpgradeMigration.LegacyMoPubPresent();
 }
 void OnEnable()
 {
     legacyMoPub     = MoPubUpgradeMigration.LegacyMoPubPresent();
     legacyMediation = MoPubUpgradeMigration.LegacyMediationPresent();
     coroutine       = this.StartCoroutine(GetSDKVersions());
 }