/**
     * Gets the license URL of the image.
     * @return the license URL
     */
    public String getLicense() {
        return license;
    }

    /**
     * Sets the license URL of the image.
     * @param license the license URL to set
     */
    public void setLicense(final String license) {
        this.license = license;
    }

    @Override
    public String toString() {