l10n.gentext.language string
l10n.gentext.language Sets the gentext language

## Description

If this parameter is set to any value other than the empty string, its value will be used as the value for the language when generating text. Setting l10n.gentext.language overrides any settings within the document being formatted.

It's much more likely that you might want to set the l10n.gentext.default.language parameter.