public static Builder newBuilder(
        com.google.cloud.visionai.v1.FacetProperty.DateTimeBucketSpec prototype) {
      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
    }
<pre>
Granularity of date type facet.
</pre>

<code>.google.cloud.visionai.v1.FacetProperty.DateTimeBucketSpec.Granularity granularity = 1;
</code>

@return The granularity.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/FacetProperty.java