public String getPassthroughControl() {
        return this.passthroughControl;
    }
When set to whenPossible, input DD+ audio will be passed through if it is present on the input. This detection is
dynamic over the life of the transcode. Inputs that alternate between DD+ and non-DD+ content will have a
consistent DD+ output as the system alternates between passthrough and encoding.

@return When set to whenPossible, input DD+ audio will be passed through if it is present on the input. This
        detection is dynamic over the life of the transcode. Inputs that alternate between DD+ and non-DD+
        content will have a consistent DD+ output as the system alternates between passthrough and encoding.
@see Eac3PassthroughControl
aws-java-sdk-medialive/src/main/java/com/amazonaws/services/medialive/model/Eac3Settings.java