}

    private Configurer getConfigurer() {
        return getConfigurer(false);
    }

    private Configurer getConfigurer(boolean ignoreAbsent) {
        return new Configurer(ignoreAbsent);
    }

    protected void withActualValue(Action<Configurer> action) {
        setToConventionIfUnset();
        action.execute(getConfigurer(true));
    }

    public void add(final T element) {
        getConfigurer(false).add(element);
    }

    @Override
    public void add(final Provider<? extends T> providerOfElement) {
        getConfigurer(false).add(providerOfElement);
    }

    @Override
    @SafeVarargs
    @SuppressWarnings("varargs")
    public final void addAll(T... elements) {
        getConfigurer(false).addAll(elements);
    }

    @Override

        this.valueState.setConvention(convention);
        this.value = initialValue;
    }

    protected void withActualValue(Action<Configurer> action) {
        setToConventionIfUnset();
        action.execute(getConfigurer());
    }

    @Override
    public boolean isImmutable() {
        return false;
    }

    @Override
    public Class<?> publicType() {
        return ConfigurableFileCollection.class;
    }