How to use the qtpyvcp.widgets.qtdesigner._DesignerPlugin function in qtpyvcp

class HalLabelPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalLabel

from qtpyvcp.widgets.hal_widgets.hal_slider import HalSlider
class HalSliderPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalSlider

from qtpyvcp.widgets.hal_widgets.hal_button import HalButton
class HalButtonPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalButton

from qtpyvcp.widgets.hal_widgets.hal_lcd import HalLCDNumber
class HalLCDNumberPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalLCDNumber

from qtpyvcp.widgets.hal_widgets.hal_groupbox import HalGroupBox
class HalGroupBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalGroupBox
    def isContainer(self):
        return True

from qtpyvcp.widgets.hal_widgets.hal_plot import HalPlot
class HalPlotPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalPlot

from qtpyvcp.widgets.hal_widgets.hal_bar_indicator import HalBarIndicator

from qtpyvcp.widgets.qtdesigner import _DesignerPlugin

from hal_checkbox import HalCheckBox
class HalCheckBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalCheckBox

from hal_spinbox import HalQSpinBox
class HalQSpinBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalQSpinBox

from hal_double_spinbox import HalDoubleSpinBox
class HalDoubleSpinBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalDoubleSpinBox

from qtpyvcp.widgets.hal_widgets.hal_led import HalLedIndicator
class HalLedIndicatorPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalLedIndicator

from qtpyvcp.widgets.hal_widgets.hal_label import HalLabel
class HalLabelPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalLabel

from qtpyvcp.widgets.hal_widgets.hal_slider import HalSlider
class HalSliderPlugin(_DesignerPlugin):
    def pluginClass(self):

from mdientry_widget import MDIEntry
class MDIEntryPlugin(_DesignerPlugin):
    def pluginClass(self):
        return MDIEntry

    def toolTip(self):
        return "MDI command entry"

from mdihistory_widget import MDIHistory
class MDIHistoryPlugin(_DesignerPlugin):
    def pluginClass(self):
        return MDIHistory

from gcode_editor import GcodeEditor
class GcodeEditorPlugin(_DesignerPlugin):
    def pluginClass(self):
        return GcodeEditor

from recent_file_combobox import RecentFileComboBox
class RecentFileComboBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return RecentFileComboBox

from tool_table import ToolTable
class ToolTablePlugin(_DesignerPlugin):
    def pluginClass(self):
        return ToolTable

from jog_increment import JogIncrementWidget
class JogIncrementPlugin(_DesignerPlugin):
    def pluginClass(self):

def objectName(self):
        return 'settings_spinbox'
    def designerExtensions(self):
        return [SettingSelectorExtension, RulesEditorExtension]

from setting_slider import VCPSettingsDoubleSpinBox
class VCPSettingsDoubleSpinBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return VCPSettingsDoubleSpinBox
    def objectName(self):
        return 'settings_double_spinbox'
    def designerExtensions(self):
        return [SettingSelectorExtension, RulesEditorExtension]

from setting_slider import VCPSettingsCheckBox
class VCPSettingsCheckBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return VCPSettingsCheckBox
    def designerExtensions(self):
        return [SettingSelectorExtension, RulesEditorExtension]
    def domXml(self):
        return """
        
          
            CheckBox
          
        """

from offset_table import OffsetTable
class OffsetTablePlugin(_DesignerPlugin):
    def pluginClass(self):
        return OffsetTable

from qtpyvcp.widgets.qtdesigner import _DesignerPlugin

from hal_checkbox import HalCheckBox
class HalCheckBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalCheckBox

from hal_spinbox import HalQSpinBox
class HalQSpinBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalQSpinBox

from hal_double_spinbox import HalDoubleSpinBox
class HalDoubleSpinBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalDoubleSpinBox

from qtpyvcp.widgets.hal_widgets.hal_led import HalLedIndicator
class HalLedIndicatorPlugin(_DesignerPlugin):
    def pluginClass(self):

from qtpyvcp.widgets.qtdesigner import _DesignerPlugin

from hal_checkbox import HalCheckBox
class HalCheckBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalCheckBox

from hal_spinbox import HalQSpinBox
class HalQSpinBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalQSpinBox

from hal_double_spinbox import HalDoubleSpinBox
class HalDoubleSpinBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalDoubleSpinBox

from qtpyvcp.widgets.hal_widgets.hal_led import HalLedIndicator
class HalLedIndicatorPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalLedIndicator

from qtpyvcp.widgets.hal_widgets.hal_label import HalLabel
class HalLabelPlugin(_DesignerPlugin):
    def pluginClass(self):
        return HalLabel

from qtpyvcp.widgets.hal_widgets.hal_slider import HalSlider
class HalSliderPlugin(_DesignerPlugin):
    def pluginClass(self):

class MDIHistoryPlugin(_DesignerPlugin):
    def pluginClass(self):
        return MDIHistory

from gcode_editor import GcodeEditor
class GcodeEditorPlugin(_DesignerPlugin):
    def pluginClass(self):
        return GcodeEditor

from recent_file_combobox import RecentFileComboBox
class RecentFileComboBoxPlugin(_DesignerPlugin):
    def pluginClass(self):
        return RecentFileComboBox

from tool_table import ToolTable
class ToolTablePlugin(_DesignerPlugin):
    def pluginClass(self):
        return ToolTable

from jog_increment import JogIncrementWidget
class JogIncrementPlugin(_DesignerPlugin):
    def pluginClass(self):
        return JogIncrementWidget

from file_system import FileSystemTable
class FileSystemPlugin(_DesignerPlugin):
    def pluginClass(self):
        return FileSystemTable

from file_system import RemovableDeviceComboBox
class RemovableDeviceComboBoxPlugin(_DesignerPlugin):
    def pluginClass(self):

from subcall_button import SubCallButton
class MacroButtonPlugin(_DesignerPlugin):
    def pluginClass(self):
        return SubCallButton
    def toolTip(self):
        return "Execute a macro"

from led_button import LEDButton
class LedButtonPlugin(_DesignerPlugin):
    def pluginClass(self):
        return LEDButton
    def toolTip(self):
        return "LED button"

from mdi_button import MDIButton
class MDIButtonPlugin(_DesignerPlugin):
    def pluginClass(self):
        return MDIButton

from dialog_button import DialogButton
class DialogButtonPlugin(_DesignerPlugin):
    def pluginClass(self):
        return DialogButton

from qtpyvcp.widgets.qtdesigner import _DesignerPlugin
from qtpyvcp.widgets.qtdesigner.designer_plugin import RulesEditorExtension

from line_edit import VCPLineEdit
class VCPLineEditPlugin(_DesignerPlugin):
    def pluginClass(self):
        return VCPLineEdit

from mdientry_widget import MDIEntry
class MDIEntryPlugin(_DesignerPlugin):
    def pluginClass(self):
        return MDIEntry

    def toolTip(self):
        return "MDI command entry"

from mdihistory_widget import MDIHistory
class MDIHistoryPlugin(_DesignerPlugin):
    def pluginClass(self):
        return MDIHistory

from frame import VCPFrame
class VCPFramePlugin(_DesignerPlugin):
    def pluginClass(self):
        return VCPFrame
    def isContainer(self):
        return True

from widget import VCPWidget
class VCPWidgetPlugin(_DesignerPlugin):
    def pluginClass(self):
        return VCPWidget
    def isContainer(self):
        return True

from stack import VCPStackedWidget
class VCPStackedWidgetPlugin(_DesignerPlugin):
    def pluginClass(self):
        return VCPStackedWidget
    def isContainer(self):
        return True
    def domXml(self):
        return """