### Question:
VersioningUtils { public static final Boolean isVersionExpression(String appName) throws VersioningSyntaxException { Boolean isVersionExpression = false; if(appName != null){ isVersionExpression = !isUntagged(appName); } return isVersionExpression; }  static final String getUntaggedName(String appName); static final String getExpression(String appName); static final void checkIdentifier(String appName); static final List<String> getVersions(String untaggedName,
            List<Application> allApplications); static final List<String> matchExpression(List<String> listVersion, String appName); static final String getRepositoryName(String appName); static final Boolean isUntagged(String appName); static final Boolean isVersionExpression(String appName); static final Boolean isVersionExpressionWithWildCard(String appName); static final Boolean isVersionIdentifier(String appName); static final LocalStringManagerImpl LOCALSTRINGS; static final String EXPRESSION_SEPARATOR; static final String EXPRESSION_WILDCARD; static final String REPOSITORY_DASH; }### Answer:
@Test public void testIsVersionExpression() { assertEquals(false, VersioningUtils.isVersionExpression(null)); assertEquals(false, VersioningUtils.isVersionExpression(APPLICATION_NAME)); assertEquals(true, VersioningUtils.isVersionExpression(APPLICATION_NAME+":BETA")); assertEquals(true, VersioningUtils.isVersionExpression(APPLICATION_NAME+"::")); }