Start a new inbound group session, from a key exported from olm_outbound_group_session_key
Returns olm_error() on failure. On failure last_error will be set with an error code. The last_error will be:
* OLM_INVALID_BASE64 if the session_key is not valid base64 * OLM_BAD_SESSION_KEY if the session_key is invalid
See Implementation
Start a new inbound group session, from a key exported from olm_outbound_group_session_key
Returns olm_error() on failure. On failure last_error will be set with an error code. The last_error will be:
* OLM_INVALID_BASE64 if the session_key is not valid base64 * OLM_BAD_SESSION_KEY if the session_key is invalid