How to use the @theia/workspace/lib/browser.WorkspaceCommands.FILE_DUPLICATE function in @theia/workspace

commandId: CommonCommands.PASTE.id,
            order: 'b'
        });
        registry.registerMenuAction(NavigatorContextMenu.CLIPBOARD, {
            commandId: FileDownloadCommands.COPY_DOWNLOAD_LINK.id,
            order: 'z'
        });

        registry.registerMenuAction(NavigatorContextMenu.MODIFICATION, {
            commandId: WorkspaceCommands.FILE_RENAME.id
        });
        registry.registerMenuAction(NavigatorContextMenu.MODIFICATION, {
            commandId: WorkspaceCommands.FILE_DELETE.id
        });
        registry.registerMenuAction(NavigatorContextMenu.MODIFICATION, {
            commandId: WorkspaceCommands.FILE_DUPLICATE.id
        });

        const downloadUploadMenu = [...NAVIGATOR_CONTEXT_MENU, '6_downloadupload'];
        registry.registerMenuAction(downloadUploadMenu, {
            commandId: FileSystemCommands.UPLOAD.id,
            order: 'a'
        });
        registry.registerMenuAction(downloadUploadMenu, {
            commandId: FileDownloadCommands.DOWNLOAD.id,
            order: 'b'
        });

        registry.registerMenuAction(NavigatorContextMenu.NAVIGATION, {
            commandId: WorkspaceCommands.NEW_FILE.id
        });
        registry.registerMenuAction(NavigatorContextMenu.NAVIGATION, {