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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 postprocess_monograph(marc_xml, mods, uuid, counter, url):
 """ Fix bugs in `mods` produced by XSLT template. Args: marc_xml (str):
 Original Aleph record. mods (str):
 XML string generated by XSLT template. uuid (str):
 UUID of the package. counter (int):
 Number of record, is added to XML headers. url (str):
 URL of the publication (public or not). Returns: str: Updated XML. """

    dom = double_linked_dom(mods)

    if not isinstance(marc_xml, MARCXMLRecord):
        marc_xml = MARCXMLRecord(marc_xml)

    add_missing_xml_attributes(dom, counter)
    fix_invalid_type_parameter(dom)

    if uuid:
        add_uuid(dom, uuid)

    add_marccountry_tag(dom)

    # add <genre> tag if not found
    add_genre(dom)

    # remove hairs from some tags
    remove_hairs_from_tags(dom)

    fix_issuance(dom)
    fix_location_tag(dom)
    fix_related_item_tag(dom)

    fix_missing_electronic_locator_tag(dom, url)
    fix_missing_lang_tags(marc_xml, dom)

    return dom.prettify()