public Builder mergePayloadOptions(
        com.google.apps.events.subscriptions.v1.PayloadOptions value) {
      if (payloadOptionsBuilder_ == null) {
        if (((bitField0_ & 0x00000040) != 0)
            && payloadOptions_ != null
            && payloadOptions_
                != com.google.apps.events.subscriptions.v1.PayloadOptions.getDefaultInstance()) {
          getPayloadOptionsBuilder().mergeFrom(value);
        } else {
          payloadOptions_ = value;
        }
      } else {
        payloadOptionsBuilder_.mergeFrom(value);
      }
      if (payloadOptions_ != null) {
        bitField0_ |= 0x00000040;
        onChanged();
      }
      return this;
    }
<pre>
Optional. Options about what data to include in the event payload. Only
supported for Google Chat events.
</pre>

<code>
.google.apps.events.subscriptions.v1.PayloadOptions payload_options = 6 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-workspaceevents/proto-google-cloud-workspaceevents-v1/src/main/java/com/google/apps/events/subscriptions/v1/Subscription.java