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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 set_font_increment(self, value):
 """ Increments the document font size. :param value: Font size increment. :type value: int :return: Method success. :rtype: bool """


        font = self.font()
        point_size = font.pointSize() + value
        if point_size < self.__minimum_font_point_size or point_size > self.__maximum_font_point_size:
            return False

        font.setPointSize(point_size)
        self.setFont(font)
        return True