Setter for **self.__minimum_font_point_size** attribute.

        :param value: Attribute value.
        :type value: int

def minimum_font_point_size(self, value):
        """
        Setter for **self.__minimum_font_point_size** attribute.

        :param value: Attribute value.
        :type value: int
        """

        if value is not None:
            assert type(value) in (int, float), "'{0}' attribute: '{1}' type is not 'int' or 'float'!".format(
                "minimum_font_point_size", value)
            assert value > 0, "'{0}' attribute: '{1}' need to be exactly positive!".format(
                "minimum_font_point_size", value)
        self.__minimum_font_point_size = value