Get size of file.

        :param minimum: Maximum value.
        :param maximum: Minimum value.
        :return: Size of file.

        :Example:
            56 kB

def size(self, minimum: int = 1, maximum: int = 100) -> str:
        """Get size of file.

        :param minimum: Maximum value.
        :param maximum: Minimum value.
        :return: Size of file.

        :Example:
            56 kB
        """
        num = self.random.randint(minimum, maximum)
        unit = self.random.choice(
            ['bytes', 'kB', 'MB', 'GB', 'TB'])

        return '{num} {unit}'.format(
            num=num,
            unit=unit,
        )