حذف إشارة مرجعية من PDF عبر SDK جافا

   package com.aspose.asposecloudpdfusecases.bookmarks;

    import java.io.File;
    import java.nio.file.Path;
    import java.nio.file.StandardCopyOption;
    import com.aspose.asposecloudpdf.api.PdfApi;
    import com.aspose.asposecloudpdf.model.AsposeResponse;

    public class BookmarkDelete {
        public static void Remove() {
            String REMOTE_FOLDER   = "Your_Temp_Pdf_Cloud";
            String LOCAL_FOLDER    = "c:\\Samples";
            String PDF_DOCUMENT    = "sample.pdf";
            String PDF_OUTPUT      = "bookmarks_delete_output.pdf";
            String BOOKMARK_PATH  = "/1";

            try {
                PdfApi pdfApi = new PdfApi(API_KEY, API_SECRET);

                // upload local PDF file to remote storage
                File file = new File(Path.of(LOCAL_FOLDER, PDF_DOCUMENT).toString());
                pdfApi.uploadFile(Path.of(REMOTE_FOLDER , PDF_DOCUMENT).toString(), file, null);
                System.out.println(String.format("File '%s' successfully uploaded!", Path.of(LOCAL_FOLDER, PDF_DOCUMENT).toString()));

                AsposeResponse response = pdfApi.deleteBookmark(PDF_DOCUMENT, BOOKMARK_PATH, REMOTE_FOLDER, null, null);
                if (response.getCode() != 200)
                    System.err.println("Error: unexpected error when deleting bookmarks! '" + response.getStatus() + "'");
                else{
                    // download changed PDF file from remote folder...
                    File f = pdfApi.downloadFile(Path.of(REMOTE_FOLDER , PDF_DOCUMENT).toString(), null, null);
                    java.nio.file.Files.copy(Path.of(f.getPath()), Path.of(LOCAL_FOLDER, PDF_OUTPUT), StandardCopyOption.REPLACE_EXISTING);
                    System.out.println(String.format("File '%s' successfully dowloaded!", Path.of(LOCAL_FOLDER, PDF_OUTPUT).toString()));                
                    System.out.println("Successfully deleted bookmark in document ! '" + PDF_OUTPUT + "'");
                }
            }
            catch (Exception e) {
                e.printStackTrace();
            }
        }
    }