public Builder clearWorkloadCluster() {
      workloadCluster_ = getDefaultInstance().getWorkloadCluster();
      bitField0_ = (bitField0_ & ~0x00001000);
      onChanged();
      return this;
    }
<pre>
Optional. Immutable. The WorkloadCluster on which to create the Deployment.
This field should only be passed when the deployment_level of the source
blueprint specifies deployments on workload clusters e.g.
WORKLOAD_CLUSTER_DEPLOYMENT.
</pre>

<code>
string workload_cluster = 13 [(.google.api.field_behavior) = IMMUTABLE, (.google.api.field_behavior) = OPTIONAL];
</code>

@return This builder for chaining.
java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/Deployment.java