@java.lang.Override
      public final Builder mergeUnknownFields(
          final com.google.protobuf.UnknownFieldSet unknownFields) {
        return super.mergeUnknownFields(unknownFields);
      }
<pre>
Granularity of date type facet.
</pre>

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

@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/FacetProperty.java