@java.lang.Override
  public com.google.cloud.video.livestream.v1.Encryption.DrmSystemsOrBuilder
      getDrmSystemsOrBuilder() {
    return drmSystems_ == null
        ? com.google.cloud.video.livestream.v1.Encryption.DrmSystems.getDefaultInstance()
        : drmSystems_;
  }
<pre>
Required. Configuration for DRM systems.
</pre>

<code>
.google.cloud.video.livestream.v1.Encryption.DrmSystems drm_systems = 3 [(.google.api.field_behavior) = REQUIRED];
</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Encryption.java