public File getFile(String fullName) {
        checkAndMakeParentDirecotry(fullName);
        return new File(fullName);
    }
Base object of file persistence.

@author code4crafter@gmail.com <br>
@since 0.2.0
webmagic-core/src/main/java/us/codecraft/webmagic/utils/FilePersistentBase.java