Function mupdf_sys::fz_new_xhtml_document_from_document

pub unsafe extern "C" fn fz_new_xhtml_document_from_document(
    ctx: *mut fz_context, 
    old_doc: *mut fz_document
) -> *mut fz_document

Use text extraction to convert the input document into XHTML, then open the result as a new document that can be reflowed.