Lucene.Net.Store.MockRAMDirectory.MaybeThrowDeterministicException C# (CSharp) Method

        internal virtual void MaybeThrowDeterministicException()
        {
            lock (this)
            {
                if (failures != null)
                {
                    for (int i = 0; i < failures.Count; i++)
                    {
                        ((Failure)failures[i]).Eval(this);
                    }
                }
            }
        }
    }

 public override void  Flush()
 {
     dir.MaybeThrowDeterministicException();
     base.Flush();
 }