getSecondaryMaxMinValue method
Implementation
getSecondaryMaxMinValue(int index, KLineEntity item) {
SecondaryIndicator indicator = secondaryIndicators[index];
final value = indicator.getMaxMinValue(
item,
mSecondaryRectList[index].mMinValue,
mSecondaryRectList[index].mMaxValue,
);
mSecondaryRectList[index].mMinValue = value.$1;
mSecondaryRectList[index].mMaxValue = value.$2;
}