public static int ReserveAndWriteUtf8(IByteBuffer buf, ICharSequence seq, int start, int end, int reserveBytes)
{
var seqCount = seq.Count;
if (MathUtil.IsOutOfBounds(start, end - start, seqCount))
{
ThrowHelper.ThrowIndexOutOfRangeException_Expected_Seq(start, seqCount, end);
}
return(ReserveAndWriteUtf8Seq(buf, seq, start, end, reserveBytes));
}