'Called post import, i.e., after the book file has been added to the database. Note that
this is different from :meth:`postadd` which is called when the book record is created for
the first time. This method is called whenever a new file is added to a book record. It is
useful for modifying the book record based on the contents of the newly added file.
:param book_id: Database id of the added book.
:param book_format: The file type of the book that was added.
:param db: Library database.'

def postimport(self, book_id, book_format, db):

    pass
