pub fn classify(sample: &[u8]) -> SeqTypeExpand description
seqkit’s alphabet guess over one sequence (pass the first record’s prefix —
see DEFAULT_ALPHABET_GUESS_LEN): any protein-only residue ⇒ Protein;
else U-without-T ⇒ RNA; else DNA. An empty or non-bio sequence ⇒ Unlimit.
Ambiguity codes and gaps do not decide the type.