Extracts samples from all delay parameters using the delay ID lookup system. Similar to extract_parameters(), this extracts all delay distribution parameters and uses the *_id variables (e.g., delay_id, trunc_id) to assign meaningful names.
extract_delays(samples, args)A <data.table> with columns: variable, sample, value,
or NULL if delay parameters don't exist in the samples
Extracted stan model (using rstan::extract())
Stan data list with delay_id_* and related lookup variables.