code: @Override
      protected void setAttributeValue(final boolean updateClient,
              final String value) {
          if (value != null) {
              final Collection<String> allValues = extractValues(value);
              super.replaceAllInAttributeValueSet(updateClient, allValues);
          }
      }
docs: sets the value for this attribute
  
  @param updateClient
  true to update client browser page if it is
  available. The default value is true but it will
  be ignored if there is no client browser page.
  @param value
  the value for the attribute.
  @since 2.1.15
  @author WFF