code: def _rm_udf_file_ident(self, parent, fi):
          # type: (udfmod.UDFFileEntry, bytes) -> int
          '''
          An internal method to remove a UDF File Identifier from the parent
          and remove any space from the Logical Volume as necessary.
  
          Parameters:
           parent - The parent entry to remove the UDF File Identifier from.
           fi - The file identifier to remove.
          Returns:
           The number of bytes to remove from the ISO.
          '''
          logical_block_size = self.pvd.logical_block_size()
          num_extents_to_remove = parent.remove_file_ident_desc_by_name(fi,
                                                                        logical_block_size)
          self.udf_logical_volume_integrity.logical_volume_impl_use.num_files -= 1
  
          self._find_udf_record.cache_clear()  # pylint: disable=no-member
  
          return num_extents_to_remove * logical_block_sizf _rm_udf_file_ident(self, parent, fi):
          # type: (udfmod.UDFFileEntry, bytes) -> int
          '''
          An internal method to remove a UDF File Identifier from the parent
          and remove any space from the Logical Volume as necessary.
  
          Parameters:
           parent - The parent entry to remove the UDF File Identifier from.
           fi - The file identifier to remove.
          Returns:
           The number of bytes to remove from the ISO.
          '''
          logical_block_size = self.pvd.logical_block_size()
          num_extents_to_remove = parent.remove_file_ident_desc_by_name(fi,
                                                                        logical_block_size)
          self.udf_logical_volume_integrity.logical_volume_impl_use.num_files -= 1
  
          self._find_udf_record.cache_clear()  # pylint: disable=no-member
  
          return num_extents_to_remove * logical_block_size
docs: An internal method to remove a UDF File Identifier from the parent
          and remove any space from the Logical Volume as necessary.
  
          Parameters:
           parent - The parent entry to remove the UDF File Identifier from.
           fi - The file identifier to remove.
          Returns:
           The number of bytes to remove from the ISO.