How to use the qtawesome.icon_browser.IconBrowser function in QtAwesome

def run():
    """
    Start the IconBrowser and block until the process exits.
    """
    app = QtWidgets.QApplication([])

    browser = IconBrowser()
    browser.show()

    sys.exit(app.exec_())

def __init__(self):
        super(IconBrowser, self).__init__()
        self.setMinimumSize(400, 300)
        self.setWindowTitle('QtAwesome Icon Browser')

        qtawesome._instance()
        fontMaps = qtawesome._resource['iconic'].charmap

        iconNames = []
        for fontCollection, fontData in fontMaps.items():
            for iconName in fontData:
                iconNames.append('%s.%s' % (fontCollection, iconName))

        self._filterTimer = QtCore.QTimer(self)
        self._filterTimer.setSingleShot(True)
        self._filterTimer.setInterval(AUTO_SEARCH_TIMEOUT)
        self._filterTimer.timeout.connect(self._updateFilter)