private void ensureMetadataFieldsIsMutable() {
      if (!metadataFields_.isModifiable()) {
        metadataFields_ = new com.google.protobuf.LazyStringArrayList(metadataFields_);
      }
      bitField0_ |= 0x00000001;
    }
<pre>
Report specification for exporting object metadata.
Next ID: 4
</pre>

Protobuf type {@code google.cloud.storageinsights.v1.ObjectMetadataReportOptions}
java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ObjectMetadataReportOptions.java