Adds a pixmap to this graphics item.
        
        :param      pixmap | <QtGui.QPixmap>

def addPixmap(self, pixmap):
        """
        Adds a pixmap to this graphics item.
        
        :param      pixmap | <QtGui.QPixmap>
        """
        # add the item to the group
        item = QtGui.QGraphicsPixmapItem(pixmap)
        self.addToGroup(item)
        return item