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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 boundary(self):
 """ Get the image boundary Returns: A tupple composed by the westernmost_longitude, the westernmost_longitude, the minimum_latitude and the maximum_latitude. """


        return (int(self.WESTERNMOST_LONGITUDE),
                int(self.EASTERNMOST_LONGITUDE),
                int(self.MINIMUM_LATITUDE),
                int(self.MAXIMUM_LATITUDE))