public void UnusableAfterDispose()
        {
            var content = new PooledStringContent("");

            content.Dispose();
            Assert.ThrowsAsync <ObjectDisposedException>(() => content.ReadAsStreamAsync());
        }
 public void DoubleDispose()
 {
     using (var content = new PooledStringContent(""))
     {
         content.Dispose();
     }
 }