You're seeing just the function
merge_child, go back to OHLC module for more information.
Link to this function
Merges candle into another candle.
If main candles
:stime is 0 then fallback
to the merge_child
main_candle- Candle which will be merged into.
merge_candle- Candle which will be merged. It is important to have etime less than first candle. Meaning both candles should stay in the same timeframe.