public String getStreamManifestBehavior() {
        return this.streamManifestBehavior;
    }
When set to send, send stream manifest so publishing point doesn't start until all streams start.

@return When set to send, send stream manifest so publishing point doesn't start until all streams start.
@see SmoothGroupStreamManifestBehavior
aws-java-sdk-medialive/src/main/java/com/amazonaws/services/medialive/model/MsSmoothGroupSettings.java