@java.lang.Override
    public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
      getSerializedSize();
      if (getFolderNumbersList().size() > 0) {
        output.writeUInt32NoTag(10);
        output.writeUInt32NoTag(folderNumbersMemoizedSerializedSize);
      }
      for (int i = 0; i < folderNumbers_.size(); i++) {
        output.writeInt64NoTag(folderNumbers_.getLong(i));
      }
      getUnknownFields().writeTo(output);
    }
<pre>
Optional. The list of folder numbers to include in the dataset.
</pre>

<code>repeated int64 folder_numbers = 1 [(.google.api.field_behavior) = OPTIONAL];</code>

@param index The index of the element to return.
@return The folderNumbers at the given index.
java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfig.java