code: @Override
      public Object getAttributeValue(final String name) {
          for (final IAdditionalDescriptors additionalDescriptors : delegateDescriptors) {
              final Map<String, List<Object>> attributes = additionalDescriptors.getAttributes();
              if (attributes != null && attributes.containsKey(name)) {
                  return additionalDescriptors.getAttributeValue(name);
              }
          }
  
          return null;
      }
docs: /* (non-Javadoc)
  @see org.jasig.services.persondir.IPersonAttributes#getAttributeValue(java.lang.String)