/**
     * Returns the HTML text to appear in the footer for each page.
     */
    @Nullable @Optional @Input
    public String getFooter() {
        return footer;
    }

    /**
     * Sets the HTML text to appear in the footer for each page.
     */
    public void setFooter(@Nullable String footer) {
        this.footer = footer;
    }

    /**

            options.setEncoding("utf-8");
            options.setDocEncoding("utf-8");
            options.setCharSet("utf-8");

            options.addBooleanOption("-allow-script-in-comments", true);
            options.setFooter("<link rel=\"stylesheet\" href=\"https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/default.min.css\">" +

                }

                if (options.isUnchecked()) {
                    parameters.getOptions().add("-unchecked");
                }
            }

            String footer = options.getFooter();
            if (footer != null) {
                parameters.getOptions().add("-doc-footer");
                parameters.getOptions().add(footer);
            }