<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def compress(self):
 """ Compress the new exported image, Block size was taken from virt-builder page """

        if not self.do_compress:
            return
        with LogTask('Compressing disk'):
            utils.compress(self.dst, 16777216)
            os.unlink(self.dst)