How to use the polib.polib.unescape function in polib

obj = polib.POEntry(msgid=polib.unescape(msgid))
            pot.append(obj)

            # convert to polib style
            if self._context["jobconf"].get("translate/poentry-with-occurrences", True):
                obj.occurrences = []
                for location in strings[msgid]["occurrences"]:
                    obj.occurrences.append((re.sub(r'\\', "/", location["file"]), location["line"]))

            # adding a hint/comment if available
            if "hint" in strings[msgid]:
                obj.comment = strings[msgid]["hint"]
            
            if "plural" in strings[msgid]:
                #obj.msgid_plural = strings[msgid]["plural"]
                obj.msgid_plural = polib.unescape(strings[msgid]["plural"])
                obj.msgstr_plural[u'0'] = ""
                obj.msgstr_plural[u'1'] = ""

        pot.sort()

        return pot

if self._context["jobconf"].get("translate/poentry-with-occurrences", True):
                obj.occurrences = []
                for location in self.conditionOccurrences(strings[msgid]["occurrences"]):
                    if self._context["jobconf"].get("translate/occurrences-with-linenumber", True):
                        line = location["line"]
                    else:
                        line = ""
                    obj.occurrences.append((re.sub(r'\\', "/", location["file"]), line))

            # adding a hint/comment if available
            if "hint" in strings[msgid]:
                obj.comment = strings[msgid]["hint"]

            if "plural" in strings[msgid]:
                #obj.msgid_plural = strings[msgid]["plural"]
                obj.msgid_plural = polib.unescape(strings[msgid]["plural"])
                obj.msgstr_plural[u'0'] = ""
                obj.msgstr_plural[u'1'] = ""

        pot.sort()

        return pot