public java.util.List<String> getTcpRetryEvents() {
        return tcpRetryEvents;
    }
<p>
Specify a valid value. The event occurs before any processing of a request has started and is encountered when
the upstream is temporarily or permanently unavailable.
</p>

@return Specify a valid value. The event occurs before any processing of a request has started and is encountered
        when the upstream is temporarily or permanently unavailable.
@see TcpRetryPolicyEvent
aws-java-sdk-appmesh/src/main/java/com/amazonaws/services/appmesh/model/HttpRetryPolicy.java