@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccountEmail_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, serviceAccountEmail_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(audience_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, audience_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Audience to be used when generating OIDC token. If not specified, the URI
specified in target will be used.
</pre>

<code>string audience = 2;</code>

@return The bytes for audience.
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/OidcToken.java