language property
Language to display, must be either: auto (default) to use the
language that the visitor has chosen, or an ISO 639-1 two-letter
language code (e.g. en) or language and country code (e.g. en-US).
Refer to the list of supported languages for more information.
Default value is auto
Refer to list of supported languages for more infrmation.
Implementation
final String language;