final int sequenceVariationLength = Math.max(fromLength, toLength);
final ByteString toQuality = var.getToQuality();
if (hasReadInsertion(from)) {
bases.clear();
scores.clear();
for (int i = 0; i < sequenceVariationLength; i++) {
final char toChar = i >= toLength ? '-' : to.charAt(i);
int size = toQuality.size();
final byte qual = size > 0 && i < size ? toQuality.byteAt(i) : 40;