ByteArrayOutputStream baos = new ByteArrayOutputStream();
SourceMapGeneratorV3 generator = new SourceMapGeneratorV3();
int fragment = 0;
if (!sourceInfoMaps.isEmpty()) {
for (JsSourceMap sourceMap : sourceInfoMaps) {
generator.reset();
addMappings(new SourceMappingWriter(generator), sourceMap);
updateSourceMap(generator, fragment);
baos.reset();
OutputStreamWriter out = new OutputStreamWriter(baos);