@java.lang.Override
  public int hashCode() {
    if (memoizedHashCode != 0) {
      return memoizedHashCode;
    }
    int hash = 41;
    hash = (19 * hash) + getDescriptor().hashCode();
    hash = (37 * hash) + PREFERRED_LOCATION_FIELD_NUMBER;
    hash = (53 * hash) + getPreferredLocation().hashCode();
    hash = (37 * hash) + SECONDARY_LOCATION_FIELD_NUMBER;
    hash = (53 * hash) + getSecondaryLocation().hashCode();
    hash = (29 * hash) + getUnknownFields().hashCode();
    memoizedHashCode = hash;
    return hash;
  }
<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>

@return The bytes for secondaryLocation.
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/StretchedClusterConfig.java