### Question:
VnfVolumeAdapterRestProperties implements AdapterRestProperties { @Override public String getKey() { return UrnPropertiesReader.getVariable(keyProp); } VnfVolumeAdapterRestProperties(); @Override String getAuth(); @Override String getKey(); @Override URL getEndpoint(); @Override String getSystemName();  }### Answer:
@Test public void testGetKey() { assertEquals("mso.msoKey", VnfVolumeAdapterRestProperties.keyProp); }