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

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)

        model = IconModel(self.palette().color(QtGui.QPalette.Text))
        model.setStringList(sorted(iconNames))

        self._proxyModel = QtCore.QSortFilterProxyModel()
        self._proxyModel.setSourceModel(model)
        self._proxyModel.setFilterCaseSensitivity(QtCore.Qt.CaseInsensitive)

        self._listView = IconListView(self)
        self._listView.setUniformItemSizes(True)
        self._listView.setViewMode(QtWidgets.QListView.IconMode)
        self._listView.setModel(self._proxyModel)
        self._listView.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
        self._listView.doubleClicked.connect(self._copyIconText)

        self._lineEdit = QtWidgets.QLineEdit(self)
        self._lineEdit.setAlignment(QtCore.Qt.AlignCenter)
        self._lineEdit.textChanged.connect(self._triggerDelayedUpdate)
        self._lineEdit.returnPressed.connect(self._triggerImmediateUpdate)

        self._comboBox = QtWidgets.QComboBox(self)
        self._comboBox.setMinimumWidth(75)
        self._comboBox.currentIndexChanged.connect(self._triggerImmediateUpdate)
        self._comboBox.addItems([ALL_COLLECTIONS] + sorted(fontMaps.keys()))

def __init__(self, parent=None):
        super(IconListView, self).__init__(parent)
        self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)