如何在java中将页面从一个docx复制到另一个docx

I am trying to automate docx report generation process. For this I am using java and docx4j. I have a template document containing only single page.I would like to copy that page modify it and save it in another docx document.The output report is of multiple similar pages with modification from the template. How do I go about it.I am trying to automate docx report generation