how to set the other font family for keywords

[coppyC]

• VSCode Version: 1.19.1
• OS Version: Linux

Description:
My English is not very good and something can not express clearly.
Thanks for your reading.
I've been using vscode for a long time, and I really like it, but there is a feature that I do not know how to configure it, like configuring font styles in a theme,

  "editor.tokenColorCustomizations": {
    "keywords": {
      "fontFamily": "monospace"
    }
}

like write it in setting
I think this is very useful, you can easily distinguish between keywords, but vscode does not seem to provide an implementation.
how to do it?

Reproduces without extensions: No

[usernamehw]

Currently not possible. Duplicate of #36512