public com.google.protobuf.Duration.Builder getValidAfterDurationBuilder() {
        return getValidAfterDurationFieldBuilder().getBuilder();
      }
<pre>
A relative time after which resources may be created.
</pre>

<code>.google.protobuf.Duration valid_after_duration = 3;</code>
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/QueuedResource.java