Lists the contact groups you can access: yours, those shared with you, and, for workspace admins, those of the workspace. Each group has _id, userId (its owner), name, shared and, for groups synced from Google, groupId.

Results are paged: pass the next (or previous) value from one response to get the following page.

This operation is deprecated. It has no replacement in the public API, and no removal date has been announced.