How to use the plottr.QtGui.QVBoxLayout function in plottr

def __init__(self, parent=None):
        super().__init__(parent)

        self._emitUpdate = True

        #  make radio buttons and layout ##
        self.buttons = {
            GridOption.noGrid: QtGui.QRadioButton('No grid'),
            GridOption.guessShape: QtGui.QRadioButton('Guess shape'),
            GridOption.specifyShape: QtGui.QRadioButton('Specify shape'),
        }

        btnLayout = QtGui.QVBoxLayout()
        self.btnGroup = QtGui.QButtonGroup(self)

        for opt in GridOption:
            btn = self.buttons[opt]
            self.btnGroup.addButton(btn, opt.value)
            btnLayout.addWidget(btn)

        btnBox = QtGui.QGroupBox('Grid')
        btnBox.setLayout(btnLayout)

        # make shape spec widget
        self.shapeSpec = ShapeSpecificationWidget()
        shapeLayout = QtGui.QVBoxLayout()
        shapeLayout.addWidget(self.shapeSpec)
        shapeBox = QtGui.QGroupBox('Shape')
        shapeBox.setLayout(shapeLayout)

def __init__(self, parent=None):
        super().__init__(parent=parent)

        setMplDefaults()

        self.plot = MPLPlot()
        self.mplBar = NavBar(self.plot, self)
        self.addMplBarOptions()
        self.mplBar.setIconSize(QtCore.QSize(16,16))

        self.layout = QtGui.QVBoxLayout(self)
        self.layout.addWidget(self.plot)
        self.layout.addWidget(self.mplBar)

def __init__(self, parent: QtGui.QWidget = None):
        """Constructor for :class:`PlotWidgetContainer`. """
        super().__init__(parent=parent)

        self.plotWidget = None
        self.data = None

        self.layout = QtGui.QVBoxLayout(self)
        self.layout.setContentsMargins(0, 0, 0, 0)

self.reload = QtGui.QPushButton('Reload')

        self.optSetters = {
            'filepath': self.fileinput.setText,
            'groupname': self.groupinput.setText,
        }
        self.optGetters = {
            'filepath': self.fileinput.text,
            'groupname': self.groupinput.text,
        }

        flayout = QtGui.QFormLayout()
        flayout.addRow('File path:', self.fileinput)
        flayout.addRow('Group:', self.groupinput)

        vlayout = QtGui.QVBoxLayout()
        vlayout.addLayout(flayout)
        vlayout.addWidget(self.reload)

        self.setLayout(vlayout)

        self.fileinput.textEdited.connect(
            lambda x: self.signalOption('filepath')
        )
        self.groupinput.textEdited.connect(
            lambda x: self.signalOption('groupname')
        )
        self.reload.pressed.connect(self.node.update)

def __init__(self, parent: QtGui.QWidget = None,
                 embedWidgetClass: QtGui.QWidget = None,
                 node: Node = None):
        super().__init__(parent)

        self.optGetters = {}
        self.optSetters = {}
        self.node = node

        self._emitGuiChange = True

        self.widget = None
        if embedWidgetClass is not None:
            layout = QtGui.QVBoxLayout()
            layout.setContentsMargins(0, 0, 0, 0)
            self.widget = embedWidgetClass()
            layout.addWidget(self.widget)
            self.setLayout(layout)

}

        btnLayout = QtGui.QVBoxLayout()
        self.btnGroup = QtGui.QButtonGroup(self)

        for opt in GridOption:
            btn = self.buttons[opt]
            self.btnGroup.addButton(btn, opt.value)
            btnLayout.addWidget(btn)

        btnBox = QtGui.QGroupBox('Grid')
        btnBox.setLayout(btnLayout)

        # make shape spec widget
        self.shapeSpec = ShapeSpecificationWidget()
        shapeLayout = QtGui.QVBoxLayout()
        shapeLayout.addWidget(self.shapeSpec)
        shapeBox = QtGui.QGroupBox('Shape')
        shapeBox.setLayout(shapeLayout)

        # Widget layout
        layout = QtGui.QHBoxLayout()
        layout.addWidget(btnBox)
        layout.addWidget(shapeBox)
        layout.addStretch()
        self.setLayout(layout)

        # Connect signals/slots #
        self.btnGroup.buttonToggled.connect(self.gridButtonSelected)
        self.shapeSpec.confirm.clicked.connect(self.shapeSpecified)

        # Default settings