How to use the mwparserfromhell.nodes.extras.Parameter function in mwparserfromhell

def test_children(self):
        """test Template.__children__()"""
        node2p1 = Parameter(wraptext("1"), wraptext("bar"), showkey=False)
        node2p2 = Parameter(wraptext("abc"), wrap([Text("def"), Text("ghi")]),
                            showkey=True)
        node1 = Template(wraptext("foobar"))
        node2 = Template(wraptext("foo"), [node2p1, node2p2])

        gen1 = node1.__children__()
        gen2 = node2.__children__()
        self.assertEqual(node1.name, next(gen1))
        self.assertEqual(node2.name, next(gen2))
        self.assertEqual(node2.params[0].value, next(gen2))
        self.assertEqual(node2.params[1].name, next(gen2))
        self.assertEqual(node2.params[1].value, next(gen2))
        self.assertRaises(StopIteration, next, gen1)
        self.assertRaises(StopIteration, next, gen2)

tokens.TemplateClose()],
             wrap([Template(wraptext("foo"), params=[
                 Parameter(wraptext("1"), wraptext("bar"), showkey=False)])])),

            ([tokens.TemplateOpen(), tokens.Text(text="foo"),
              tokens.TemplateParamSeparator(), tokens.Text(text="bar"),
              tokens.TemplateParamEquals(), tokens.Text(text="baz"),
              tokens.TemplateClose()],
             wrap([Template(wraptext("foo"), params=[
                 Parameter(wraptext("bar"), wraptext("baz"))])])),

            ([tokens.TemplateOpen(), tokens.TemplateParamSeparator(),
              tokens.TemplateParamSeparator(), tokens.TemplateParamEquals(),
              tokens.TemplateParamSeparator(), tokens.TemplateClose()],
             wrap([Template(wrap([]), params=[
                 Parameter(wraptext("1"), wrap([]), showkey=False),
                 Parameter(wrap([]), wrap([]), showkey=True),
                 Parameter(wraptext("2"), wrap([]), showkey=False)])])),

            ([tokens.TemplateOpen(), tokens.Text(text="foo"),
              tokens.TemplateParamSeparator(), tokens.Text(text="bar"),
              tokens.TemplateParamEquals(), tokens.Text(text="baz"),
              tokens.TemplateParamSeparator(), tokens.Text(text="biz"),
              tokens.TemplateParamSeparator(), tokens.Text(text="buzz"),
              tokens.TemplateParamSeparator(), tokens.Text(text="3"),
              tokens.TemplateParamEquals(), tokens.Text(text="buff"),
              tokens.TemplateParamSeparator(), tokens.Text(text="baff"),
              tokens.TemplateClose()],
             wrap([Template(wraptext("foo"), params=[
                 Parameter(wraptext("bar"), wraptext("baz")),
                 Parameter(wraptext("1"), wraptext("biz"), showkey=False),
                 Parameter(wraptext("2"), wraptext("buzz"), showkey=False),

def test_template(self):
        """tests for building Template nodes"""
        tests = [
            ([tokens.TemplateOpen(), tokens.Text(text="foobar"),
              tokens.TemplateClose()],
             wrap([Template(wraptext("foobar"))])),

            ([tokens.TemplateOpen(), tokens.Text(text="spam"),
              tokens.Text(text="eggs"), tokens.TemplateClose()],
             wrap([Template(wraptext("spam", "eggs"))])),

            ([tokens.TemplateOpen(), tokens.Text(text="foo"),
              tokens.TemplateParamSeparator(), tokens.Text(text="bar"),
              tokens.TemplateClose()],
             wrap([Template(wraptext("foo"), params=[
                 Parameter(wraptext("1"), wraptext("bar"), showkey=False)])])),

            ([tokens.TemplateOpen(), tokens.Text(text="foo"),
              tokens.TemplateParamSeparator(), tokens.Text(text="bar"),
              tokens.TemplateParamEquals(), tokens.Text(text="baz"),
              tokens.TemplateClose()],
             wrap([Template(wraptext("foo"), params=[
                 Parameter(wraptext("bar"), wraptext("baz"))])])),

            ([tokens.TemplateOpen(), tokens.TemplateParamSeparator(),
              tokens.TemplateParamSeparator(), tokens.TemplateParamEquals(),
              tokens.TemplateParamSeparator(), tokens.TemplateClose()],
             wrap([Template(wrap([]), params=[
                 Parameter(wraptext("1"), wrap([]), showkey=False),
                 Parameter(wrap([]), wrap([]), showkey=True),
                 Parameter(wraptext("2"), wrap([]), showkey=False)])])),

def test_showkey(self):
        """test getter/setter for the showkey attribute"""
        node1 = Parameter(wraptext("1"), wraptext("foo"), showkey=False)
        node2 = Parameter(wraptext("foo"), wraptext("bar"))
        self.assertFalse(node1.showkey)
        self.assertTrue(node2.showkey)
        node1.showkey = True
        self.assertTrue(node1.showkey)
        node1.showkey = ""
        self.assertFalse(node1.showkey)
        self.assertRaises(ValueError, setattr, node2, "showkey", False)

def test_parsing(self):
        """integration test for parsing overall"""
        text = "this is text; {{this|is=a|template={{with|[[links]]|in}}it}}"
        expected = wrap([
            Text("this is text; "),
            Template(wraptext("this"), [
                Parameter(wraptext("is"), wraptext("a")),
                Parameter(wraptext("template"), wrap([
                    Template(wraptext("with"), [
                        Parameter(wraptext("1"),
                                  wrap([Wikilink(wraptext("links"))]),
                                  showkey=False),
                        Parameter(wraptext("2"),
                                  wraptext("in"), showkey=False)
                    ]),
                    Text("it")
                ]))
            ])
        ])
        actual = parser.Parser().parse(text)
        self.assertWikicodeEqual(expected, actual)

def test_name(self):
        """test getter/setter for the name attribute"""
        name1 = wraptext("1")
        name2 = wraptext("foobar")
        node1 = Parameter(name1, wraptext("foobar"), showkey=False)
        node2 = Parameter(name2, wraptext("baz"))
        self.assertIs(name1, node1.name)
        self.assertIs(name2, node2.name)
        node1.name = "héhehé"
        node2.name = "héhehé"
        self.assertWikicodeEqual(wraptext("héhehé"), node1.name)
        self.assertWikicodeEqual(wraptext("héhehé"), node2.name)

def test_unicode(self):
        """test Parameter.__unicode__()"""
        node = Parameter(wraptext("1"), wraptext("foo"), showkey=False)
        self.assertEqual("foo", str(node))
        node2 = Parameter(wraptext("foo"), wraptext("bar"))
        self.assertEqual("foo=bar", str(node2))

def test_unicode(self):
        """test Parameter.__unicode__()"""
        node = Parameter(wraptext("1"), wraptext("foo"), showkey=False)
        self.assertEqual("foo", str(node))
        node2 = Parameter(wraptext("foo"), wraptext("bar"))
        self.assertEqual("foo=bar", str(node2))

pgens = lambda k, v: Parameter(wraptext(k), wraptext(v), showkey=True)
pgenh = lambda k, v: Parameter(wraptext(k), wraptext(v), showkey=False)

and :meth:`get`.

        If *keep_field* is ``True``, we will keep the parameter's name, but
        blank its value. Otherwise, we will remove the parameter completely.

        When removing a parameter with a hidden name, subsequent parameters
        with hidden names will be made visible. For example, removing ``bar``
        from ``{{foo|bar|baz}}`` produces ``{{foo|2=baz}}`` because
        ``{{foo|baz}}`` is incorrect.

        If the parameter shows up multiple times in the template and *param* is
        not a :class:`.Parameter` object, we will remove all instances of it
        (and keep only one if *keep_field* is ``True`` - either the one with a
        hidden name, if it exists, or the first instance).
        """
        if isinstance(param, Parameter):
            return self._remove_exact(param, keep_field)

        name = str(param).strip()
        removed = False
        to_remove = []

        for i, param in enumerate(self.params):
            if param.name.strip() == name:
                if keep_field:
                    if self._should_remove(i, name):
                        to_remove.append(i)
                    else:
                        self._blank_param_value(param.value)
                        keep_field = False
                else:
                    self._fix_dependendent_params(i)