Add custom data
In many situations you may want to attach custom data to feedback items in order to better understand the context. You can add custom data incrementally or all at once. Any simple dictionary can be attached.Append custom data
If you want to attach custom data incrementally, you can do so with theattachCustomData method. The new data is merged into the existing custom data; keys that already exist are overwritten.
Merging needs SDK v19.0.0 or newer. Before,
attachCustomData replaced all existing custom data.