MongoDB.Bson.IO.MultiChunkBuffer.EnsureDataAvailable C# (CSharp) Method

        private void EnsureDataAvailable(int needed)
        {
            if (needed > _length - _position)
            {
                var available = _length - _position;
                var message = string.Format(
                    "Not enough input bytes available. Needed {0}, but only {1} are available (at position {2}).",
                    needed, available, _position);
                throw new EndOfStreamException(message);
            }
        }