<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def destroy(self):
 """Undo the effects of initdb. Destroy all evidence of this DBMS, including its backing files. """

        self.stop()
        if self.base_pathname is not None:
            self._robust_remove(self.base_pathname)