private com.google.protobuf.SingleFieldBuilderV3<
            com.google.protobuf.Timestamp,
            com.google.protobuf.Timestamp.Builder,
            com.google.protobuf.TimestampOrBuilder>
        getSnapshotTimeFieldBuilder() {
      if (snapshotTimeBuilder_ == null) {
        snapshotTimeBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.protobuf.Timestamp,
                com.google.protobuf.Timestamp.Builder,
                com.google.protobuf.TimestampOrBuilder>(
                getSnapshotTime(), getParentForChildren(), isClean());
        snapshotTime_ = null;
      }
      return snapshotTimeBuilder_;
    }
<pre>
The snapshot time.
All the report data is referenced at this point of time.
</pre>

<code>.google.protobuf.Timestamp snapshot_time = 2;</code>
java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportDetail.java