<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def isNull(self):
 """ Returns whether or not this option set has been modified. :return <bool> """

        check = self.raw_values.copy()
        scope = check.pop('scope', {})
        return len(check) == 0 and len(scope) == 0