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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def eventFilter(self, widget, event):
 """ A filter that is used to send a signal when the figure canvas is clicked. """

        if event.type() == QEvent.MouseButtonPress:
            if event.button() == Qt.LeftButton:
                self.sig_canvas_clicked.emit(self)
        return super(FigureThumbnail, self).eventFilter(widget, event)