@java.lang.Override
    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.setUnknownFields(unknownFields);
    }
<pre>
Required. Additional zone for a higher level of availability and load
balancing. Specify the resource name of a zone that belongs to the region
of the private cloud. For example:
`projects/{project}/locations/europe-west3-b` where `{project}` can either
be a project number or a project ID.
</pre>

<code>
string secondary_location = 2 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
</code>

@param value The bytes for secondaryLocation to set.
@return This builder for chaining.
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/StretchedClusterConfig.java