### Question:
OVFUtils { public static List<String> getOVFVMIds(OvfDefinition ovfDocument) { List<String> ids = new ArrayList<String>(); VirtualSystemCollection vsc = ovfDocument.getVirtualSystemCollection(); for(int i = 0; i < vsc.getVirtualSystemArray().length; i++) { VirtualSystem virtualSystem = vsc.getVirtualSystemAtIndex(i); ids.add(virtualSystem.getId()); } return ids; }  static String getApplicationName(String ovf); static String getDeploymentName(String ovf); static OvfDefinition getOvfDefinition(String ovf); static int getDiskCapacityInGb(int capacity, String units); static String getIsoPathFromVm(VirtualHardwareSection virtHwSection, OvfDefinition ovfDocument); static boolean usesACacheImage(VirtualSystem virtualSystem1); static boolean containsVMWithThatOvfId(String ovf, String ovfId); static VMLimits getUpperAndLowerVMlimits(VirtualSystem virtualSystem); static int getPriceSchema(ProductSection productSection); static ProductSection getProductionSectionForOvfID(String ovf, String ovfId); static VirtualSystem getVirtualSystemForOvfId(String ovf, String ovfId); static String getDiskId(VirtualHardwareSection virtualHardwareSection); static int getCapacity(OvfDefinition ovfDocument, String diskId); static String getFileId(String diskId, Disk[] diskList); static String getUrlImg(OvfDefinition ovfDocument, String fileId); static AsceticSLAInfo getVMSlaInfo(OvfDefinition ovfDocument, String slaInfoTerm, String ovfId); static AsceticSLAInfo getAppSlaInfo(OvfDefinition ovfDocument, String slaInfoTerm); static List<AsceticTermMeasurement> getVMTermMeasurement(OvfDefinition ovfDocument, String ovfId); static List<String> getOVFVMIds(OvfDefinition ovfDocument);  }### Answer:
@Test public void getOVFVMIds() { OvfDefinition ovfDocument = OVFUtils.getOvfDefinition(threeTierWebAppOvfString); List<String> ids = OVFUtils.getOVFVMIds(ovfDocument); assertTrue(ids.contains("jmeter")); assertTrue(ids.contains("haproxy")); assertTrue(ids.contains("jboss")); assertTrue(ids.contains("mysql")); assertEquals(4, ids.size()); }