Creates a new widget for this plugin for the inputed parent.
        
        :param      parent | <QWidget>
        
        :return     <QWidget>

def createWidget( self, parent ):
        """
        Creates a new widget for this plugin for the inputed parent.
        
        :param      parent | <QWidget>
        
        :return     <QWidget>
        """
        widget = self.widgetClass()(parent, self.uiFile())
        widget.setPlugin(self)
        return widget