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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 _is_symlink(self):
        # type: () -> bool
        '''
        Internal method to determine whether this Rock Ridge entry is a symlink.
        '''
        return len(self.dr_entries.sl_records) > 0 or len(self.ce_entries.sl_records) > 0