@java.lang.Override
    public int hashCode() {
      if (memoizedHashCode != 0) {
        return memoizedHashCode;
      }
      int hash = 41;
      hash = (19 * hash) + getDescriptor().hashCode();
      if (hasMinDuration()) {
        hash = (37 * hash) + MIN_DURATION_FIELD_NUMBER;
        hash = (53 * hash) + getMinDuration().hashCode();
      }
      hash = (29 * hash) + getUnknownFields().hashCode();
      memoizedHashCode = hash;
      return hash;
    }
<pre>
Optional. Defines the minimum duration of the guarantee. If specified,
the requested resources will only be provisioned if they can be
allocated for at least the given duration.
</pre>

<code>.google.protobuf.Duration min_duration = 1 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/QueuedResource.java