The code block language descriptor. See
languages to learn more.
class : String
The CSS class associated with the language. When not specified the
languageproperty is used to create a class prefixed by "language-".
label : String
The human–readable label associated with the language and displayed in the UI.
language : String
The name of the language that will be stored in the model attribute. Also, when
classis not specified, it will be used to create the CSS class associated with the language (prefixed by "language-").