Function gmo_coin_rs2::private::change_losscut_price::request_change_losscut_price

pub async fn request_change_losscut_price(
    http_client: &impl HttpClient, 
    position_id: &str, 
    losscut_price: i64
) -> Result<RestResponse<ChangeLosscutPrice>, Error>

ロスカットレート変更APIを呼び出す。