Adds the Component Widget to the engine.

        :return: Method success.
        :rtype: bool

def add_widget(self):
        """
        Adds the Component Widget to the engine.

        :return: Method success.
        :rtype: bool
        """

        LOGGER.debug("> Adding '{0}' Component Widget.".format(self.__class__.__name__))

        self.__engine.addDockWidget(Qt.DockWidgetArea(self.__dock_area), self)

        return True