OHLCHelper.get_candle_type

You're seeing just the function get_candle_type, go back to OHLCHelper module for more information.
Link to this function

get_candle_type(open, close)

Specs

get_candle_type(number(), number()) :: :bullish | :bearish

Gets the current candle type(pullish or bearish).

Returns :bullish - if close price > open price. bearish - if previous close price <= open price.