addSlice method
Adds the next chunk to this.
Adds the substring defined by start and end-exclusive to this.
If isLast is true closes this.
Implementation
@override
void addSlice(String str, int start, int end, bool isLast) {
RangeError.checkValidRange(start, end, str.length);
if (start == end) {
return;
}
final sliceData = encoder.convert(str, start, end);
sink.add(sliceData);
if (isLast) {
close();
}
}