I2 Localization Support
You can enable I2 Localization support with Edit / Project Settings… / New UI Widgets / I2 Localization Support / Enable. If I2 Localization not installed option will not be available.
Disable support with Edit / Project Settings… / New UI Widgets / I2 Localization Support / Disable.
Support is enabled only to installed platforms. Platforms that were added after it requires enabling support again.
If you enabled Assembly Definitions then you need to create an assembly definition for the I2 Localization if not exist and specify it as a reference in the