How to use the spyder.config.main.CONF.set function in spyder

self.first_spyder_run = True
            self.setup_default_layouts('default', settings)
            self.extconsole.setMinimumHeight(250)

            # Now that the initial setup is done, copy the window settings,
            # except for the hexstate in the quick layouts sections for the
            # default layouts. 
            # Order and name of the default layouts is found in config.py
            section = 'quick_layouts'
            get_func = CONF.get_default if default else CONF.get
            order = get_func(section, 'order')
            
            # restore the original defaults if reset layouts is called
            if default:
                CONF.set(section, 'active', order)
                CONF.set(section, 'order', order)
                CONF.set(section, 'names', order)

            for index, name, in enumerate(order):
                prefix = 'layout_{0}/'.format(index)
                self.save_current_window_settings(prefix, section)
                CONF.set(section, prefix+'state', None)        

            # store the initial layout as the default in spyder
            prefix = 'layout_default/'
            section = 'quick_layouts'
            self.save_current_window_settings(prefix, section)
            self.current_quick_layout = 'default'
            CONF.set(section, prefix+'state', None)
            
            # Regenerate menu
            self.quick_layout_set_menu()

self.setWindowState(Qt.WindowMaximized)
            self.first_spyder_run = True
            self.setup_default_layouts('default', settings)
            self.extconsole.setMinimumHeight(250)

            # Now that the initial setup is done, copy the window settings,
            # except for the hexstate in the quick layouts sections for the
            # default layouts. 
            # Order and name of the default layouts is found in config.py
            section = 'quick_layouts'
            get_func = CONF.get_default if default else CONF.get
            order = get_func(section, 'order')
            
            # restore the original defaults if reset layouts is called
            if default:
                CONF.set(section, 'active', order)
                CONF.set(section, 'order', order)
                CONF.set(section, 'names', order)

            for index, name, in enumerate(order):
                prefix = 'layout_{0}/'.format(index)
                self.save_current_window_settings(prefix, section)
                CONF.set(section, prefix+'state', None)        

            # store the initial layout as the default in spyder
            prefix = 'layout_default/'
            section = 'quick_layouts'
            self.save_current_window_settings(prefix, section)
            self.current_quick_layout = 'default'
            CONF.set(section, prefix+'state', None)
            
            # Regenerate menu

def save_current_window_settings(self, prefix, section='main'):
        """Save current window settings with *prefix* in
        the userconfig-based configuration, under *section*"""
        win_size = self.window_size
        prefs_size = self.prefs_dialog_size

        CONF.set(section, prefix+'size', (win_size.width(), win_size.height()))
        CONF.set(section, prefix+'prefs_dialog_size',
                 (prefs_size.width(), prefs_size.height()))
        CONF.set(section, prefix+'is_maximized', self.isMaximized())
        CONF.set(section, prefix+'is_fullscreen', self.isFullScreen())
        pos = self.window_position
        CONF.set(section, prefix+'position', (pos.x(), pos.y()))
        self.maximize_dockwidget(restore=True)# Restore non-maximized layout
        qba = self.saveState()
        CONF.set(section, prefix+'state', qbytearray_to_str(qba))
        CONF.set(section, prefix+'statusbar',
                    not self.statusBar().isHidden())

"eventually creating a new issue <a href="\&quot;%s\&quot;">here</a>. "
            "Your feedback will always be greatly appreciated."
            "" % (get_conf_path(), __project_url__,
                  __forum_url__, __project_url__))

    # Create main window
    mainwindow = None
    try:
        mainwindow = run_spyder(app, options, args)
    except FontError as fontError:
        QMessageBox.information(None, "Spyder",
                "Spyder was unable to load the <i>Spyder 3</i> "
                "icon theme. That's why it's going to fallback to the "
                "theme used in Spyder 2.<br><br>"
                "For that, please close this window and start Spyder again.")
        CONF.set('main', 'icon_theme', 'spyder 2')
    except BaseException:
        CONF.set('main', 'crash', True)
        import traceback
        traceback.print_exc(file=STDERR)
        traceback.print_exc(file=open('spyder_crash.log', 'w'))
    if mainwindow is None:
        # An exception occured
        if SPLASH is not None:
            SPLASH.hide()
        return

    ORIGINAL_SYS_EXIT()

def save_current_window_settings(self, prefix, section='main'):
        """Save current window settings with *prefix* in
        the userconfig-based configuration, under *section*"""
        win_size = self.window_size
        prefs_size = self.prefs_dialog_size

        CONF.set(section, prefix+'size', (win_size.width(), win_size.height()))
        CONF.set(section, prefix+'prefs_dialog_size',
                 (prefs_size.width(), prefs_size.height()))
        CONF.set(section, prefix+'is_maximized', self.isMaximized())
        CONF.set(section, prefix+'is_fullscreen', self.isFullScreen())
        pos = self.window_position
        CONF.set(section, prefix+'position', (pos.x(), pos.y()))
        self.maximize_dockwidget(restore=True)# Restore non-maximized layout
        qba = self.saveState()
        CONF.set(section, prefix+'state', qbytearray_to_str(qba))
        CONF.set(section, prefix+'statusbar',
                    not self.statusBar().isHidden())

self.first_spyder_run = True
            self.setup_default_layouts('default', settings)

            # Now that the initial setup is done, copy the window settings,
            # except for the hexstate in the quick layouts sections for the
            # default layouts. 
            # Order and name of the default layouts is found in config.py
            section = 'quick_layouts'
            get_func = CONF.get_default if default else CONF.get
            order = get_func(section, 'order')
            
            # restore the original defaults if reset layouts is called
            if default:
                CONF.set(section, 'active', order)
                CONF.set(section, 'order', order)
                CONF.set(section, 'names', order)

            for index, name, in enumerate(order):
                prefix = 'layout_{0}/'.format(index)
                self.save_current_window_settings(prefix, section)
                CONF.set(section, prefix+'state', None)        

            # store the initial layout as the default in spyder
            prefix = 'layout_default/'
            section = 'quick_layouts'
            self.save_current_window_settings(prefix, section)
            self.current_quick_layout = 'default'
            CONF.set(section, prefix+'state', None)
            
            # Regenerate menu
            self.quick_layout_set_menu()
        self.set_window_settings(*settings)

"" % (get_conf_path(), __project_url__,
                  __forum_url__, __project_url__))

    # Create main window
    mainwindow = None
    try:
        mainwindow = run_spyder(app, options, args)
    except FontError as fontError:
        QMessageBox.information(None, "Spyder",
                "Spyder was unable to load the <i>Spyder 3</i> "
                "icon theme. That's why it's going to fallback to the "
                "theme used in Spyder 2.<br><br>"
                "For that, please close this window and start Spyder again.")
        CONF.set('main', 'icon_theme', 'spyder 2')
    except BaseException:
        CONF.set('main', 'crash', True)
        import traceback
        traceback.print_exc(file=STDERR)
        traceback.print_exc(file=open('spyder_crash.log', 'w'))
    if mainwindow is None:
        # An exception occured
        if SPLASH is not None:
            SPLASH.hide()
        return

    ORIGINAL_SYS_EXIT()

def save_current_window_settings(self, prefix, section='main'):
        """Save current window settings with *prefix* in
        the userconfig-based configuration, under *section*"""
        win_size = self.window_size
        prefs_size = self.prefs_dialog_size

        CONF.set(section, prefix+'size', (win_size.width(), win_size.height()))
        CONF.set(section, prefix+'prefs_dialog_size',
                 (prefs_size.width(), prefs_size.height()))
        CONF.set(section, prefix+'is_maximized', self.isMaximized())
        CONF.set(section, prefix+'is_fullscreen', self.isFullScreen())
        pos = self.window_position
        CONF.set(section, prefix+'position', (pos.x(), pos.y()))
        self.maximize_dockwidget(restore=True)# Restore non-maximized layout
        qba = self.saveState()
        CONF.set(section, prefix+'state', qbytearray_to_str(qba))
        CONF.set(section, prefix+'statusbar',
                    not self.statusBar().isHidden())

def save(self):
        if self.language is not None:
            language = self.language.lower()
            CONF.set('lsp-server', language, self.__dict__)