private static OutputStream maybeWrapStatsOutputStream(
OutputStream outputStream,
CompressingFilterContext context,
CompressingFilterStats.StatsField field) {
assert outputStream != null;
OutputStream result;
if (context.isStatsEnabled()) {
CompressingFilterStats stats = context.getStats();
CompressingFilterStats.OutputStatsCallback callbackOutput =
stats.getOutputStatsCallback(field);
result = new StatsOutputStream(outputStream, callbackOutput);
} else {
result = outputStream;
}
return result;
}
