private IMigrationClient GetTarget()
 {
     if (_Target is null)
     {
         var credentials = CheckForNetworkCredentials(_networkCredentials.Target);
         _Target = _services.GetRequiredService <IMigrationClient>();
         _Target.Configure(Config.Target, credentials);
     }
     return(_Target);
 }
 private IMigrationClient GetSource()
 {
     if (_Source is null)
     {
         var credentials = CheckForNetworkCredentials(_networkCredentials.Source);
         _Source = _services.GetRequiredService <IMigrationClient>();
         _Source.Configure(Config.Source, credentials);
     }
     return(_Source);
 }