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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_verified_read(self):
 """Add ``read`` perm for all verified subj. Public ``read`` is removed if present. """

        self.remove_perm(d1_common.const.SUBJECT_PUBLIC, 'read')
        self.add_perm(d1_common.const.SUBJECT_VERIFIED, 'read')