How to use the junitparser.junitparser.System function in junitparser

def __init__(self, content=None):
        super(System, self).__init__(self._tag)
        self.text = content

self.text = content

    @property
    def text(self):
        return self._elem.text

    @text.setter
    def text(self, value):
        self._elem.text = value


class SystemOut(System):
    _tag = "system-out"


class SystemErr(System):
    _tag = "system-err"

_tag = ""

    def __init__(self, content=None):
        super(System, self).__init__(self._tag)
        self.text = content

    @property
    def text(self):
        return self._elem.text

    @text.setter
    def text(self, value):
        self._elem.text = value


class SystemOut(System):
    _tag = "system-out"


class SystemErr(System):
    _tag = "system-err"

def __init__(self, content=None):
        super(System, self).__init__(self._tag)
        self.text = content

self.text = content

    @property
    def text(self):
        return self._elem.text

    @text.setter
    def text(self, value):
        self._elem.text = value


class SystemOut(System):
    _tag = "system-out"


class SystemErr(System):
    _tag = "system-err"

_tag = ""

    def __init__(self, content=None):
        super(System, self).__init__(self._tag)
        self.text = content

    @property
    def text(self):
        return self._elem.text

    @text.setter
    def text(self, value):
        self._elem.text = value


class SystemOut(System):
    _tag = "system-out"


class SystemErr(System):
    _tag = "system-err"