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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 draw(self, surfaceObj):
 """Blit the current button's appearance to the surface object."""

        if self._visible:
            if self.buttonDown:
                surfaceObj.blit(self.surfaceDown, self._rect)
            elif self.mouseOverButton:
                surfaceObj.blit(self.surfaceHighlight, self._rect)
            else:
                surfaceObj.blit(self.surfaceNormal, self._rect)