public com.google.protobuf.ByteString getOrchestrationClusterBytes() {
      java.lang.Object ref = orchestrationCluster_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        orchestrationCluster_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Immutable. Reference to the orchestration cluster on which templates for
this resources will be applied. This should be of format
projects/{project}/locations/{location}/orchestrationClusters/{orchestration_cluster}.
</pre>

<code>
string orchestration_cluster = 5 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.resource_reference) = { ... }
</code>

@return The bytes for orchestrationCluster.
java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/EdgeSlm.java