@Override
    public String toString() {
        if (stringified == null) {
            stringified = formatToString();
        }

        return stringified;
    }
@Test
    void testStandardUtils() throws IOException {
        final MemorySize size = new MemorySize(1234567890L);
        final MemorySize cloned = CommonTestUtils.createCopySerializable(size);

        assertThat(cloned).isEqualTo(size);
        assertThat(cloned).hasSameHashCodeAs(size);
        assertThat(cloned).hasToString(size.toString());
    }