BinanceFutures.USDM.MarketData.klines

You're seeing just the function klines, go back to BinanceFutures.USDM.MarketData module for more information.
Link to this function

klines(symbol, interval, start_time \\ nil, end_time \\ nil, limit \\ 500)

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Specs

Gets Kline/candlestick bars for a symbol. Klines are uniquely identified by their open time.

Example

iex(1)> BinanceFutures.USDM.MarketData.klines("BTCUSDT", "5m", nil, nil, 2)
{:ok,
[
  [1616338800000, "57212.69", "57315.00", "57196.19", "57300.00", "496.263",
    1616339099999, "28425514.78940", 7160, "273.108", "15642623.69718", "0"],
  [1616339100000, "57300.00", "57300.00", "57200.61", "57206.47", "174.865",
    1616339399999, "10009130.07051", 2602, "60.409", "3457649.49072", "0"]
]}