code: @Override
      public Boolean get(int i) {
          byte b = data.getByte(i);
          if (b == BooleanColumnType.BYTE_TRUE) {
              return Boolean.TRUE;
          }
          if (b == BooleanColumnType.BYTE_FALSE) {
              return Boolean.FALSE;
          }
          return null;
      }
docs: Returns the value in row i as a Boolean
  
  @param i the row number
  @return A Boolean object (may be null)