(String)getWizardSequence().getAttribute(AttributeDefinitionDetailsAction.ATTR_DESCRIPTION, null),
false,
true,
validationString);
try {
def.validate(defaultValue, getClass().getClassLoader());
} catch (CoreException ce) {
ce.getBundleActionMessage().setArg3(def.getLabel());
if (errs == null) {
errs = new ActionErrors();
}