}
            }
        } else if (hasWithName(name)) {
            failOnDuplicateTask(name);
        }

        addInternal(task);
    }

    private static void failOnDuplicateTask(String task) {

        // do nothing
    }

    /**
     * Asserts that an item with the given name can be added to this collection.
     */
    protected void assertCanAdd(String name) {
        if (hasWithName(name)) {
            throw new InvalidUserDataException(String.format("Cannot add a %s with name '%s' as a %s with that name already exists.", getTypeDisplayName(), name, getTypeDisplayName()));
        }
    }