### Question:
PropertiesUtils { public static String getSuffix( ManipulationSession session ) { return session.getState( VersioningState.class ).getRebuildSuffix(); } private  PropertiesUtils(); static Map<String, String> getPropertiesByPrefix( final Properties properties, final String prefix ); static PropertyUpdate updateProperties( ManipulationSession session, Project project, boolean ignoreStrict,
                                                   String key, String newValue ); static String getSuffix( ManipulationSession session ); static boolean checkStrictValue( ManipulationSession session, String oldValue, String newValue ); static boolean cacheProperty( Project project, CommonState state, Map<Project, Map<String, PropertyMapper>> versionPropertyUpdateMap,
                                         String oldVersion, String newVersion, Object originalType, boolean force ); static String extractPropertyName( String version ); static void verifyPropertyMapping( CommonState cState, Project project, Map<Project, Map<String, PropertyMapper>> versionPropertyMap,
                                              ProjectVersionRef pvr, String version ); static void handleConfigPrecedence( Properties userProperties, Properties config );  }### Answer:
@Test public void testGetSuffix() throws Exception { p.remove( "versionSuffix" ); ManipulationSession session = createUpdateSession(); assertNotNull( PropertiesUtils.getSuffix( session ) ); }