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

this.openerService.getOpeners().then(openers => {
            for (const opener of openers) {
                const openWithCommand = WorkspaceCommands.FILE_OPEN_WITH(opener);
                registry.registerMenuAction(NavigatorContextMenu.OPEN_WITH, {
                    commandId: openWithCommand.id,
                    label: opener.label,
                    icon: opener.iconClass
                });
            }
        });