Retrieve detailed information about a specific group, including participants, admins, and settings.
Instance or customer-level API key. Either the instance's own API key or the customer's API key is accepted. Must be paired with the X-Instance-Id header to identify the target instance.
The ID of the WhatsApp instance to use
Group JID
Group info
Represents a WhatsApp user with all known identifiers. The id field is always present: it prefers a phone-based JID, falling back to LID.