fn load_sampling_bin(&self, sampling_id: &str, bin_id: &str) -> Result<Bin>
fn load_sampling_bin_index(&self, sampling_id: &str) -> Result<IndexSet<String>>
fn load_sampling_bins(&self, sampling_id: &str) -> Result<IndexMap<String, Bin>>
fn load_sampling(&self, sampling_id: &str) -> Result<Sampling>