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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 readConfigFromJSON(self, fileName):
 """Read configuration from JSON. :param fileName: path to the configuration file. :type fileName: str. """

        self.__logger.debug("readConfigFromJSON: reading from " + fileName)
        with open(fileName) as data_file:
            data = load(data_file)
        self.readConfig(data)