How to launch window with single pane and no command?

[rawbeans]

How do I launch a window without running a command?

Currently I can do one of the following but they seem hacky or redundant:

windows:
  - name: test
    root: ~/test/dir
    panes:
      - echo

windows:
  - name: test2
    root: ~/test/dir
    panes:
      - cd ~/test/dir

windows:
  - name: test3
    root: ~/test/dir
    command: cd ~/test/dir

[chrisfosterelli]

@rawbeans You can specify no command with {}:

windows:
  - name: test3
    root: ~/test/dir
    command: {}