code: def new(self):
          # type: () -> None
          '''
          A method to create a new UDF Anchor Volume Structure.
  
          Parameters:
           None.
          Returns:
           Nothing.
          '''
          if self._initialized:
              raise pycdlibexception.PyCdlibInternalError('UDF Anchor Volume Structure already initialized')
  
          self.desc_tag = UDFTag()
          self.desc_tag.new(2)  # FIXME: we should let the user set serial_number
          self.main_vd_length = 32768
          self.main_vd_extent = 0  # This will get set later.
          self.reserve_vd_length = 32768
          self.reserve_vd_extent = 0  # This will get set later.
  
          self._initialized = Truf new(self):
          # type: () -> None
          '''
          A method to create a new UDF Anchor Volume Structure.
  
          Parameters:
           None.
          Returns:
           Nothing.
          '''
          if self._initialized:
              raise pycdlibexception.PyCdlibInternalError('UDF Anchor Volume Structure already initialized')
  
          self.desc_tag = UDFTag()
          self.desc_tag.new(2)  # FIXME: we should let the user set serial_number
          self.main_vd_length = 32768
          self.main_vd_extent = 0  # This will get set later.
          self.reserve_vd_length = 32768
          self.reserve_vd_extent = 0  # This will get set later.
  
          self._initialized = True
docs: A method to create a new UDF Anchor Volume Structure.
  
          Parameters:
           None.
          Returns:
           Nothing.