### Question:
Version implements Comparable<Version> { private Version(int version) { Preconditions.checkArgument(version >= 1); this.version = version; } private  Version(int version); static Version of(int version); int get(); Version increment(); @Override int compareTo(Version o); @Override int hashCode(); @Override final boolean equals(Object object); @Override String toString(); boolean isLessThan(Version version); boolean isGreaterThanOrEqual(Version version);  }### Answer:
@Test public void testVersion() { assertThat(Version.of(1).get()).isEqualTo(1); }