private String componentName;

    /**
     * Constructor with component name.
     * @param componentName The name of the component that is not available.
     */
    public ContainerNotAvailableException(final String componentName) {
        super(componentName + " is not available.");
        this.componentName = componentName;
    }

    /**

     */
    public String getComponentName() {
        return componentName;
    }

    /**
     * Sets the component name.
     *
     * @param componentName The component name to set
     */
    public void setComponentName(final String componentName) {
        this.componentName = componentName;
    }

    /**
     * Gets the crawler container.
     *

        CrawlerPooledObjectFactory<U> f = new CrawlerPooledObjectFactory<>();
        f.setCrawlerContainer(container);
        f.setComponentName(componentName);
        return f;
    }

    /**
     * Helper method to create a factory with listener
     */
    private <U> CrawlerPooledObjectFactory<U> createFactory(String componentName, OnDestroyListener<U> listener) {