User guide issue : disappeared or deprecated field?

[tsuchi8]

I tried to use cwl and followed the Common Workflow Language User Guide,but I had questions.

In section 4(Returning Output Files), "example_out" field is written as follows:

    "example_out": {
        "checksum": "sha1$da39a3ee5e6b4b0d3255bfef95601890afd80709",
        "basename": "hello.txt",
        "nameroot": "hello",
        "nameext": ".txt",
        "location": "file:///home/me/cwl/user_guide/hello.txt",
        "path": "/home/me/cwl/user_guide/hello.txt",
        "class": "File",
        "size": 0
    }

However, "nameroot" and "nameext" have disappeared in my results. Is this caused by version of my cwl?

Here is my cwl verison

$cwltool --version
~/.pyenv/versions/3.6.1/bin/cwltool 1.0.20190621234233

It seems that same problem is existing in Section 5 and Section 6.

Thanks.