use PathBuf;
use instrument;
use crate::;
/// Fetch data from the origin.
///
/// # Arguments
///
/// * `config` - Optional path to the configuration file. If not provided, the
/// default configuration file will be used. This file is expected to be in
/// TOML format. The default file is `ohlcv.toml` and is expected to be in
/// the current working directory or in `/etc/ohlcv`.
///
/// # Errors
///
/// Returns an error if the data cannot be fetched or if the configuration file
/// cannot be loaded.
pub async