code: def _len_sec_desc(self):
      '''Returns the logical size of the file'''
      return len(self.header) + len(self.owner_sid) + len(self.group_sid) + len(self.sacl) + len(self.daclf _len_sec_desc(self):
      '''Returns the logical size of the file'''
      return len(self.header) + len(self.owner_sid) + len(self.group_sid) + len(self.sacl) + len(self.dacl)
docs: Returns the logical size of the file