Pulls the close series for the inclusive buffer-index span
[startIndex, endIndex]. Returned array is ordered oldest→newest and
indexed so result[i] is the close at buffer index startIndex + i.
The host wires this in OHLCVChart.startDrawing so the drawing
can sample candle data without the render path ever touching the
buffer (which the Drawing.render signature deliberately omits).
Pulls the
closeseries for the inclusive buffer-index span[startIndex, endIndex]. Returned array is ordered oldest→newest and indexed soresult[i]is the close at buffer indexstartIndex + i. The host wires this in OHLCVChart.startDrawing so the drawing can sample candle data without the render path ever touching the buffer (which theDrawing.rendersignature deliberately omits).