public Builder clearOrchestrationCluster() {
      bitField0_ = (bitField0_ & ~0x00000004);
      orchestrationCluster_ = null;
      if (orchestrationClusterBuilder_ != null) {
        orchestrationClusterBuilder_.dispose();
        orchestrationClusterBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Required. The resource being created
</pre>

<code>
.google.cloud.telcoautomation.v1alpha1.OrchestrationCluster orchestration_cluster = 3 [(.google.api.field_behavior) = REQUIRED];
</code>
java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/CreateOrchestrationClusterRequest.java