writeFromSync method
Implementation
@override
void writeFromSync(List<int> buffer, [int start = 0, int? end]) {
if (_file == null) {
_open();
}
final int size;
if (end == null) {
size = buffer.length;
} else {
size = end - start;
}
_file!.writeFromSync(buffer, start, end);
_position += size;
}