docs: public FluoKeyValue[] getKeyValues() {
      FluoKeyValue kv = keyVals[0];
      kv.setKey(new Key(row, fam, qual, vis, ColumnType.WRITE.encode(1)));
      kv.getValue().set(WriteValue.encode(0, false, false));
  
      kv = keyVals[1];
      kv.setKey(new Key(row, fam, qual, vis, ColumnType.DATA.encode(0)));
      kv.getValue().set(val);
  
      return keyVals;
    }