System.Security.Cryptography.DSAImplementation.DSACng.AdjustHashSizeIfNecessary C# (CSharp) Method

            private byte[] AdjustHashSizeIfNecessary(byte[] hash)
            {
                Debug.Assert(hash != null);

                int qLength = ComputeQLength();

                // Note to review (from steve harter) -- code commented out because SHA1 encodes in 20 bytes
                //  but default for v2 struct is 32 (SHA256) bytes so qLength (32) can be > hash.Length (20) 
                //  so v2 would not support SHA1. Also remove this code in .net desktop?
                // Sample code that will fail in .net desktop:
                //  new DSACng(2048).SignData(new ASCIIEncoding().GetBytes("Hello"), new HashAlgorithmName("SHA1"));

                //if (qLength > hash.Length)
                //    throw new PlatformNotSupportedException("todo:SR.Cryptography_DSA_HashTooShort");

                Array.Resize(ref hash, qLength);
                return hash;
            }