startTs property
final
The start time for message query. The time is a UNIX time stamp in milliseconds. The default value is -1, indicating that this parameter is ignored during message query. If the startTs is set to a specific time spot and the endTs uses the default value -1, the SDK returns messages that are sent and received in the period that is from the start time to the current time. If the startTs uses the default value -1 and the endTs is set to a specific time spot, the SDK returns messages that are sent and received in the period that is from the timestamp of the first message to the current time.
Implementation
final int startTs;