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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 class_name(self) -> str: """ Makes the fist letter big, keep the rest of the camelCaseApiName. """

        if not self.api_name:  # empty string
            return self.api_name
        # end if
        return self.api_name[0].upper() + self.api_name[1:]