How to use the gooey.util.functional.getin function in Gooey

def makeGroup(self, parent, thissizer, group, *args):
        '''
        Messily builds the (potentially) nested and grouped layout

        Note! Mutates `self.reifiedWidgets` in place with the widgets as they're
        instantiated! I cannot figure out how to split out the creation of the
        widgets from their styling without WxPython violently exploding

        TODO: sort out the WX quirks and clean this up.
        '''

        # determine the type of border , if any, the main sizer will use
        if getin(group, ['options', 'show_border'], False):
            boxDetails = wx.StaticBox(parent, -1, self.getName(group) or '')
            boxSizer = wx.StaticBoxSizer(boxDetails, wx.VERTICAL)
        else:
            boxSizer = wx.BoxSizer(wx.VERTICAL)
            boxSizer.AddSpacer(10)
            if group['name']:
                groupName = wx_util.h1(parent, self.getName(group) or '')
                groupName.SetForegroundColour(getin(group, ['options', 'label_color']))
                boxSizer.Add(groupName, 0, wx.TOP | wx.BOTTOM | wx.LEFT, 8)

        group_description = getin(group, ['description'])
        if group_description:
            description = AutoWrappedStaticText(parent, label=group_description, target=boxSizer)
            description.SetForegroundColour(getin(group, ['options', 'description_color']))
            description.SetMinSize((0, -1))
            boxSizer.Add(description, 1,  wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM, 10)

def createWidgets(self):
        """
        Instantiate the Gooey Widgets that are used within the RadioGroup
        """
        from gooey.gui.components import widgets
        return [getattr(widgets, item['type'])(self, item)
                for item in getin(self.widgetInfo, ['data', 'widgets'], [])]

def apply_default_rewrites(spec):
    top_level_subgroups = list(spec['widgets'].keys())

    for subgroup in top_level_subgroups:
        path = ['widgets', subgroup, 'contents']
        contents = getin(spec, path)
        for group in contents:
            if group['name'] == 'positional arguments':
                group['name'] = 'Required Arguments'
            if group['name'] == 'optional arguments':
                group['name'] = 'Optional Arguments'
    return spec

def arrange(self, *args, **kwargs):
        title = getin(self.widgetInfo, ['options', 'title'], _('choose_one'))
        if getin(self.widgetInfo, ['options', 'show_border'], False):
            boxDetails = wx.StaticBox(self, -1, title)
            boxSizer = wx.StaticBoxSizer(boxDetails, wx.VERTICAL)
        else:
            boxSizer = wx.BoxSizer(wx.VERTICAL)
            boxSizer.AddSpacer(10)
            boxSizer.Add(wx_util.h1(self, title), 0)

        for btn, widget in zip(self.radioButtons, self.widgets):
            sizer = wx.BoxSizer(wx.HORIZONTAL)
            sizer.Add(btn,0, wx.RIGHT, 4)
            sizer.Add(widget, 1, wx.EXPAND)
            boxSizer.Add(sizer, 1, wx.ALL | wx.EXPAND, 5)
        self.SetSizer(boxSizer)

instantiated! I cannot figure out how to split out the creation of the
        widgets from their styling without WxPython violently exploding

        TODO: sort out the WX quirks and clean this up.
        '''

        # determine the type of border , if any, the main sizer will use
        if getin(group, ['options', 'show_border'], False):
            boxDetails = wx.StaticBox(parent, -1, self.getName(group) or '')
            boxSizer = wx.StaticBoxSizer(boxDetails, wx.VERTICAL)
        else:
            boxSizer = wx.BoxSizer(wx.VERTICAL)
            boxSizer.AddSpacer(10)
            if group['name']:
                groupName = wx_util.h1(parent, self.getName(group) or '')
                groupName.SetForegroundColour(getin(group, ['options', 'label_color']))
                boxSizer.Add(groupName, 0, wx.TOP | wx.BOTTOM | wx.LEFT, 8)

        group_description = getin(group, ['description'])
        if group_description:
            description = AutoWrappedStaticText(parent, label=group_description, target=boxSizer)
            description.SetForegroundColour(getin(group, ['options', 'description_color']))
            description.SetMinSize((0, -1))
            boxSizer.Add(description, 1,  wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM, 10)

        # apply an underline when a grouping border is not specified
        # unless the user specifically requests not to show it
        if not getin(group, ['options', 'show_border'], False) and group['name'] \
                and getin(group, ['options', 'show_underline'], True):
            boxSizer.Add(wx_util.horizontal_rule(parent), 0, wx.EXPAND | wx.LEFT, 10)

        ui_groups = self.chunkWidgets(group)

def chunkWidgets(self, group):
        ''' chunk the widgets up into groups based on their sizing hints '''
        ui_groups = []
        subgroup = []
        for index, item in enumerate(group['items']):
            if getin(item, ['options', 'full_width'], False):
                ui_groups.append(subgroup)
                ui_groups.append([item])
                subgroup = []
            else:
                subgroup.append(item)
            if len(subgroup) == getin(group, ['options', 'columns'], 2) \
                    or item == group['items'][-1]:
                ui_groups.append(subgroup)
                subgroup = []
        return ui_groups

TODO: sort out the WX quirks and clean this up.
        '''

        # determine the type of border , if any, the main sizer will use
        if getin(group, ['options', 'show_border'], False):
            boxDetails = wx.StaticBox(parent, -1, self.getName(group) or '')
            boxSizer = wx.StaticBoxSizer(boxDetails, wx.VERTICAL)
        else:
            boxSizer = wx.BoxSizer(wx.VERTICAL)
            boxSizer.AddSpacer(10)
            if group['name']:
                groupName = wx_util.h1(parent, self.getName(group) or '')
                groupName.SetForegroundColour(getin(group, ['options', 'label_color']))
                boxSizer.Add(groupName, 0, wx.TOP | wx.BOTTOM | wx.LEFT, 8)

        group_description = getin(group, ['description'])
        if group_description:
            description = AutoWrappedStaticText(parent, label=group_description, target=boxSizer)
            description.SetForegroundColour(getin(group, ['options', 'description_color']))
            description.SetMinSize((0, -1))
            boxSizer.Add(description, 1,  wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM, 10)

        # apply an underline when a grouping border is not specified
        # unless the user specifically requests not to show it
        if not getin(group, ['options', 'show_border'], False) and group['name'] \
                and getin(group, ['options', 'show_underline'], True):
            boxSizer.Add(wx_util.horizontal_rule(parent), 0, wx.EXPAND | wx.LEFT, 10)

        ui_groups = self.chunkWidgets(group)

        for uigroup in ui_groups:
            sizer = wx.BoxSizer(wx.HORIZONTAL)

for item in uigroup:
                widget = self.reifyWidget(parent, item)
                # !Mutate the reifiedWidgets instance variable in place
                self.reifiedWidgets.append(widget)
                sizer.Add(widget, 1, wx.ALL | wx.EXPAND, 5)
            boxSizer.Add(sizer, 0, wx.ALL | wx.EXPAND, 5)

        # apply the same layout rules recursively for subgroups
        hs = wx.BoxSizer(wx.HORIZONTAL)
        for e, subgroup in enumerate(group['groups']):
            self.makeGroup(parent, hs, subgroup, 1, wx.EXPAND)
            if len(group['groups']) != e:
                hs.AddSpacer(5)

            # self.makeGroup(parent, hs, subgroup, 1, wx.ALL | wx.EXPAND, 5)
            itemsPerColumn = getin(group, ['options', 'columns'], 2)
            if e % itemsPerColumn or (e + 1) == len(group['groups']):
                boxSizer.Add(hs, *args)
                hs = wx.BoxSizer(wx.HORIZONTAL)


        group_top_margin = getin(group, ['options', 'margin_top'], 1)

        marginSizer = wx.BoxSizer(wx.VERTICAL)
        marginSizer.Add(boxSizer, 1, wx.EXPAND | wx.TOP, group_top_margin)

        thissizer.Add(marginSizer, *args)

# apply the same layout rules recursively for subgroups
        hs = wx.BoxSizer(wx.HORIZONTAL)
        for e, subgroup in enumerate(group['groups']):
            self.makeGroup(parent, hs, subgroup, 1, wx.EXPAND)
            if len(group['groups']) != e:
                hs.AddSpacer(5)

            # self.makeGroup(parent, hs, subgroup, 1, wx.ALL | wx.EXPAND, 5)
            itemsPerColumn = getin(group, ['options', 'columns'], 2)
            if e % itemsPerColumn or (e + 1) == len(group['groups']):
                boxSizer.Add(hs, *args)
                hs = wx.BoxSizer(wx.HORIZONTAL)


        group_top_margin = getin(group, ['options', 'margin_top'], 1)

        marginSizer = wx.BoxSizer(wx.VERTICAL)
        marginSizer.Add(boxSizer, 1, wx.EXPAND | wx.TOP, group_top_margin)

        thissizer.Add(marginSizer, *args)

def createRadioButtons(self):
        # button groups in wx are statefully determined via a style flag
        # on the first button (what???). All button instances are part of the
        # same group until a new button is created with the style flag RG_GROUP
        # https://wxpython.org/Phoenix/docs/html/wx.RadioButton.html
        # (What???)
        firstButton = wx.RadioButton(self, style=wx.RB_GROUP)
        firstButton.SetValue(False)
        buttons = [firstButton]

        for _ in getin(self.widgetInfo, ['data','widgets'], [])[1:]:
            buttons.append(wx.RadioButton(self))
        return buttons