Function ib_bar_to_nautilus_bar 

pub fn ib_bar_to_nautilus_bar(
    ib_bar: &Bar,
    bar_type: BarType,
    price_precision: u8,
    size_precision: u8,
) -> Result<Bar>

Convert IB Bar to Nautilus Bar.

ts_event and ts_init are set to the bar close (bar_close_from_open).

Errors

Returns an error if conversion fails.