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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_xmlobject_from_file(filename, xmlclass=XmlObject, validate=False, resolver=None):
 """Initialize an XmlObject from a file. See :meth:`load_xmlobject_from_string` for more details; behaves exactly the same, and accepts the same parameters, except that it takes a filename instead of a string. :param filename: name of the file that should be loaded as an xmlobject. :meth:`etree.lxml.parse` will accept a file name/path, a file object, a file-like object, or an HTTP or FTP url, however file path and URL are recommended, as they are generally faster for lxml to handle. """

    parser = _get_xmlparser(xmlclass=xmlclass, validate=validate, resolver=resolver)

    tree = etree.parse(filename, parser)
    return xmlclass(tree.getroot())