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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 load(self, filename, offset):
 """Loads NTFS volume information Args: filename (str):
 Path to file/device to read the volume \ information from. offset (uint):
 Valid NTFS partition offset from the beginning \ of the file/device. Raises: IOError: If source file/device does not exist or is not readable """

        self.offset = offset
        self.filename = filename

        self.bootsector = BootSector(
            filename=filename,
            length=NTFS_BOOTSECTOR_SIZE,
            offset=self.offset)

        self.mft_table = MftTable(
            mft_entry_size=self.bootsector.mft_record_size,
            filename=self.filename,
            offset=self.mft_table_offset
        )

        self.mft_table.preload_entries(NUM_SYSTEM_ENTRIES)

        self._load_volume_information()