How to use the @theia/editor/lib/browser.EDITOR_CONTEXT_MENU.concat function in @theia/editor

registerCommand(id: string, callback: (...args: any[]) => any, thisArg?: any): Disposable {
        const execute = callback.bind(thisArg);
        const removeCommand = this.registry.registerCommand({ id: id }, {
            execute: () => {
                const currentEditor = this.editorManager.currentEditor
                if (this.isYangEditor(currentEditor)) {
                    execute(currentEditor.editor.document.uri)
                }
            },
            isVisible: () => this.isYangEditor(this.editorManager.currentEditor)
        });
        const removeMenu = this.menuRegistry.registerMenuAction(EDITOR_CONTEXT_MENU.concat("2_yang"), {
            commandId: id,
            label: id
        });
        return {
            dispose : () => {
                removeCommand.dispose()
                removeMenu.dispose()
            }
        }
    }