Prepare ExpansionHunter v5 repeat alleles
Source:R/expansionhunter.R
rduckvep_prepare_expansionhunter.RdThe input relation has `event_index`, `info`, `format`, `sample`, `ref`, `alt`, and one-based `alt_index`. The reference relation has `event_index` and the literal `reference_sequence` from POS+1 through END. Each input event retains its source, preparation reason and exactness decision.