code: public void addExcludeOperationType(RestOperationTypeEnum theOperationType) {
  		Validate.notNull(theOperationType, "theOperationType must not be null");
  		if (myExcludeOperationTypes == null) {
  			myExcludeOperationTypes = new HashSet<RestOperationTypeEnum>();
  		}
  		myExcludeOperationTypes.add(theOperationType);
  	}
docs: Do not validate the following operations. A common use for this is to exclude {@link RestOperationTypeEnum#METADATA} so that this operation will execute as quickly as possible.