Akka.IO.ByteString.ByteString1.Concat C# (CSharp) Method

            public override ByteString Concat(ByteString that)
            {
                if (that.IsEmpty) return this;
                if (this.IsEmpty) return that;

                var b1C = that as ByteString1C;
                if (b1C != null)
                    return new ByteStrings(this, b1C.ToByteString1());

                var b1 = that as ByteString1;
                if (b1 != null)
                {
                    if (_bytes == b1._bytes && (_startIndex + _length == b1._startIndex))
                        return new ByteString1(_bytes, _startIndex, _length + b1._length);
                    return new ByteStrings(this, b1);
                }

                var bs = that as ByteStrings;
                if (bs != null)
                {
                    return Create(this, bs);
                }

                throw new InvalidOperationException();
            }