topicMessageRetentionDuration property
Indicates the minimum duration for which a message is retained after it is published to the subscription's topic.
If this field is set, messages published to the subscription's topic in
the last topic_message_retention_duration are always available to
subscribers. See the message_retention_duration field in Topic. This
field is set only in responses from the server; it is ignored if it is set
in any requests.
Output only.
Implementation
core.String? topicMessageRetentionDuration;