code: public void setByte(int index, int value)
      {
          checkIndexLength(index, SizeOf.SIZE_OF_BYTE);
          unsafe.putByte(base, address + index, (byte) (value & 0xFF));
      }
docs: Sets the specified byte at the specified absolute {@code index} in this
  buffer.  The 24 high-order bits of the specified value are ignored.
  
  @throws IndexOutOfBoundsException if the specified {@code index} is less than {@code 0} or
  {@code index + 1} is greater than {@code this.length()}