code: public static <T> T unmarshal(final String xmlData, final XmlAdapter<?, ?>[] adapters, final Class<?>... classesToBeBound) {
          if (xmlData == null) {
              return null;
          }
          try {
              final JAXBContext ctx = JAXBContext.newInstance(classesToBeBound);
              return unmarshal(ctx, xmlData, adapters);
          } catch (final JAXBException ex) {
              throw new RuntimeException("Error unmarshalling test data", ex);
          }
      }
docs: Unmarshals the given data. A <code>null</code> XML data argument returns <code>null</code>.
  
  @param xmlData
  XML data or <code>null</code>.
  @param adapters
  Adapters to associate with the unmarshaller or <code>null</code>.
  @param classesToBeBound
  List of java classes to be recognized by the {@link JAXBContext} - Cannot be <code>null</code>.
  
  @return Data or <code>null</code>.
  
  @param <T>
  Type of the expected data.