<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def delete(self, robj, rw=None, r=None, w=None, dw=None, pr=None, pw=None, timeout=None):
 """ Deletes an object. """

        raise NotImplementedError