How to use the spyder.utils.icon_manager function in spyder

else:
                label = '{} ({})'.format(name, _('not available'))
            self.framework_combobox.addItem(label)
            self.framework_combobox.model().item(ix).setEnabled(installed)

        framework_layout.addWidget(self.framework_combobox)
        layout.addLayout(framework_layout)

        layout.addSpacing(10)

        wdir_label = QLabel(_('Directory from which to run tests'))
        layout.addWidget(wdir_label)
        wdir_layout = QHBoxLayout()
        self.wdir_lineedit = QLineEdit(self)
        wdir_layout.addWidget(self.wdir_lineedit)
        self.wdir_button = QPushButton(ima.icon('DirOpenIcon'), '', self)
        self.wdir_button.setToolTip(_("Select directory"))
        self.wdir_button.clicked.connect(lambda: self.select_directory())
        wdir_layout.addWidget(self.wdir_button)
        layout.addLayout(wdir_layout)

        layout.addSpacing(20)

        self.buttons = QDialogButtonBox(QDialogButtonBox.Ok |
                                        QDialogButtonBox.Cancel)
        layout.addWidget(self.buttons)
        self.buttons.accepted.connect(self.accept)
        self.buttons.rejected.connect(self.reject)

        self.ok_button = self.buttons.button(QDialogButtonBox.Ok)
        self.ok_button.setEnabled(False)
        self.framework_combobox.currentIndexChanged.connect(

def __init__(self, editor):
        Panel.__init__(self, editor)

        self.setMouseTracking(True)
        self.scrollable = True
        self.linenumbers_color = QColor(Qt.darkGray)

        # Markers
        self._markers_margin = True

        # Icons
        self.error_icon = ima.icon('error')
        self.warning_icon = ima.icon('warning')
        self.info_icon = ima.icon('information')
        self.hint_icon = ima.icon('hint')
        self.todo_icon = ima.icon('todo')

        # Line number area management
        self._margin = True
        self._pressed = -1
        self._released = -1

# --- Other servers tab ---
        # Section label
        servers_label = QLabel(
            _("Spyder uses the <a href="\&quot;{lsp_url}\&quot;">Language Server "
              "Protocol</a> to provide code completion and linting "
              "for its Editor. Here, you can setup and configure LSP servers "
              "for languages other than Python, so Spyder can provide such "
              "features for those languages as well."
              ).format(lsp_url=LSP_URL))
        servers_label.setOpenExternalLinks(True)
        servers_label.setWordWrap(True)
        servers_label.setAlignment(Qt.AlignJustify)

        # Servers table
        table_group = QGroupBox(_('Available servers:'))
        self.table = LSPServerTable(self, text_color=ima.MAIN_FG_COLOR)
        self.table.setMaximumHeight(150)
        table_layout = QVBoxLayout()
        table_layout.addWidget(self.table)
        table_group.setLayout(table_layout)

        # Buttons
        self.reset_btn = QPushButton(_("Reset to default values"))
        self.new_btn = QPushButton(_("Set up a new server"))
        self.delete_btn = QPushButton(_("Delete currently selected server"))
        self.delete_btn.setEnabled(False)

        # Slots connected to buttons
        self.new_btn.clicked.connect(self.create_new_server)
        self.reset_btn.clicked.connect(self.reset_to_default)
        self.delete_btn.clicked.connect(self.delete_server)

def __init__(self, parent):
        QWebEngineView.__init__(self, parent)
        self.zoom_factor = 1.
        self.zoom_out_action = create_action(self, _("Zoom out"),
                                             icon=ima.icon('zoom_out'),
                                             triggered=self.zoom_out)
        self.zoom_in_action = create_action(self, _("Zoom in"),
                                            icon=ima.icon('zoom_in'),
                                            triggered=self.zoom_in)
        if WEBENGINE:
            web_page = WebPage(self)
            self.setPage(web_page)
            self.source_text = ''

if menu is None:
            self.menu = QMenu(self)
            if actions:
                add_actions(self.menu, actions)
        else:
            self.menu = menu

        # Corner widgets
        if corner_widgets is None:
            corner_widgets = {}
        corner_widgets.setdefault(Qt.TopLeftCorner, [])
        corner_widgets.setdefault(Qt.TopRightCorner, [])

        self.browse_button = create_toolbutton(self,
                                          icon=ima.icon('browse_tab'),
                                          tip=_("Browse tabs"))
        self.browse_button.setStyleSheet(
            ("QToolButton::menu-indicator{image: none;}\n"
             "QToolButton{margin: 1px; padding: 3px;}"))

        self.browse_tabs_menu = QMenu(self)
        self.browse_button.setMenu(self.browse_tabs_menu)
        self.browse_button.setPopupMode(self.browse_button.InstantPopup)
        self.browse_tabs_menu.aboutToShow.connect(self.update_browse_tabs_menu)
        corner_widgets[Qt.TopLeftCorner] += [self.browse_button]

        self.set_corner_widgets(corner_widgets)

_("Dock"),
            icon=ima.icon('dock'),
            tip=_("Dock the pane"),
            triggered=self._close_window)

        self._undock_action = create_action(
            self,
            _("Undock"),
            icon=ima.icon('undock'),
            tip=_("Undock the pane"),
            triggered=self._create_window)

        self._close_plugin_action = create_action(
            self,
            _("Close"),
            icon=ima.icon('close_pane'),
            tip=_("Close the pane"),
            triggered=self._plugin_closed)

create_cython_action = create_action(
                                   self,
                                   _("New Cython console (Python with "
                                     "C extensions)"),
                                   icon=ima.icon('ipython_console'),
                                   triggered=self.create_cython_client,
                                   context=Qt.WidgetWithChildrenShortcut)
        special_console_action_group = QActionGroup(self)
        special_console_actions = (create_pylab_action, create_sympy_action,
                                   create_cython_action)
        add_actions(special_console_action_group, special_console_actions)
        special_console_menu = QMenu(_("New special console"), self)
        add_actions(special_console_menu, special_console_actions)

        restart_action = create_action(self, _("Restart kernel"),
                                       icon=ima.icon('restart'),
                                       triggered=self.restart_kernel,
                                       context=Qt.WidgetWithChildrenShortcut)

        reset_action = create_action(self, _("Remove all variables"),
                                     icon=ima.icon('editdelete'),
                                     triggered=self.reset_kernel,
                                     context=Qt.WidgetWithChildrenShortcut)

        if self.interrupt_action is None:
            self.interrupt_action = create_action(
                self, _("Interrupt kernel"),
                icon=ima.icon('stop'),
                triggered=self.interrupt_kernel,
                context=Qt.WidgetWithChildrenShortcut)

        self.register_shortcut(restart_action, context="ipython_console",

def __init__(self, parent, enable_replace=False):
        QWidget.__init__(self, parent)
        self.enable_replace = enable_replace
        self.editor = None
        self.is_code_editor = None

        glayout = QGridLayout()
        glayout.setContentsMargins(0, 0, 0, 0)
        self.setLayout(glayout)

        self.close_button = create_toolbutton(self, triggered=self.hide,
                                      icon=ima.icon('DialogCloseButton'))
        glayout.addWidget(self.close_button, 0, 0)

        # Find layout
        self.search_text = PatternComboBox(self, tip=_("Search string"),
                                           adjust_to_minimum=False)

        self.return_shift_pressed.connect(
                lambda:
                self.find(changed=False, forward=False, rehighlight=False,
                          multiline_replace_check = False))

        self.return_pressed.connect(
                     lambda:
                     self.find(changed=False, forward=True, rehighlight=False,
                               multiline_replace_check = False))

def setup_menu_actions(self):
        """Setup and update the menu actions."""
        self.recent_notebook_menu.clear()
        self.recent_notebooks_actions = []
        if self.recent_notebooks:
            for notebook in self.recent_notebooks:
                name = notebook
                action = \
                    create_action(self,
                                  name,
                                  icon=ima.icon('filenew'),
                                  triggered=lambda v,
                                  path=notebook:
                                      self.create_new_client(filename=path))
                self.recent_notebooks_actions.append(action)
            self.recent_notebooks_actions += \
                [None, self.clear_recent_notebooks_action]
        else:
            self.recent_notebooks_actions = \
                [self.clear_recent_notebooks_action]
        add_actions(self.recent_notebook_menu, self.recent_notebooks_actions)
        self.update_notebook_actions()

def get_python_symbol_icons(symbols):
    """Return a list of icons for symbols of a python file."""
    class_icon = ima.icon('class')
    method_icon = ima.icon('method')
    function_icon = ima.icon('function')
    private_icon = ima.icon('private1')
    super_private_icon = ima.icon('private2')

    # line - 1, name, fold level
    fold_levels = sorted(list(set([s[2] for s in symbols])))
    parents = [None]*len(symbols)
    icons = [None]*len(symbols)
    indexes = []

    parent = None
    for level in fold_levels:
        for index, item in enumerate(symbols):
            line, name, fold_level, token = item
            if index in indexes:
                continue

            if fold_level == level: