writeInt8 method
Implementation
void writeInt8(int i) {
  _ensureSize(1);
  _scratchData?.setInt8(_scratchOffset, i);
  _scratchOffset += 1;
}void writeInt8(int i) {
  _ensureSize(1);
  _scratchData?.setInt8(_scratchOffset, i);
  _scratchOffset += 1;
}