/**
  * Add annotations
  *
  * @param category
  * @param contrVoc
  * @param sequence
  */
 void countAaSequence(String category, String contrVoc, String description, String sequence) {
   String key = key(category, contrVoc, description);
   CountByType cbt = countAaSequenceByType.getOrCreate(key);
   cbt.inc(sequence);
 }