@Test
public void testIsRelease() {

    assertThat(new DownloadVersion("5.0.0-rc1").isRelease()).isFalse();
    assertThat(new DownloadVersion("4.1.1-hotfix1").isRelease()).isTrue();
    assertThat(new DownloadVersion("4.1.1").isRelease()).isTrue();
    assertThat(new DownloadVersion("3.0.0-rc9").isRelease()).isFalse();
    assertThat(new DownloadVersion("1.0.0").isRelease()).isTrue();
    
}