### Question:
Snippets { public String copyPresentation(String presentationId, String copyTitle) throws IOException { Drive driveService = this.driveService; File copyMetadata = new File().setName(copyTitle); File presentationCopyFile = driveService.files().copy(presentationId, copyMetadata).execute(); String presentationCopyId = presentationCopyFile.getId(); return presentationCopyId; } Snippets(Slides service, Drive driveService, Sheets sheetsService); String createPresentation(String title); String copyPresentation(String presentationId, String copyTitle); BatchUpdatePresentationResponse createSlide(String presentationId); BatchUpdatePresentationResponse createTextBoxWithText(
            String presentationId, String slideId); BatchUpdatePresentationResponse createImage(String presentationId,
                                                       String slideId,
                                                       GoogleCredential credential); List<BatchUpdatePresentationResponse> textMerging(
            String templatePresentationId, String dataSpreadsheetId); BatchUpdatePresentationResponse imageMerging(String templatePresentationId,
                                                        String imageUrl,
                                                        String customerName); BatchUpdatePresentationResponse simpleTextReplace(
            String presentationId, String shapeId, String replacementText); BatchUpdatePresentationResponse textStyleUpdate(String presentationId, String shapeId); BatchUpdatePresentationResponse createBulletedText(String presentationId,
                                                              String shapeId); BatchUpdatePresentationResponse createSheetsChart(
            String presentationId, String pageId, String spreadsheetId, Integer sheetChartId); BatchUpdatePresentationResponse refreshSheetsChart(
            String presentationId, String presentationChartId);  }### Answer:
@Test public void testCopyPresentation() throws IOException { String presentationId = this.createTestPresentation(); String copyId = this.snippets.copyPresentation(presentationId, "My Duplicate Presentation"); assertNotNull(copyId); this.deleteFileOnCleanup(copyId); }