How to use

mergeContent

method

in

com.netflix.subtitles.ttml.TtmlParagraphResolver

private PEltype merge(Slice<PEltype> slice) {
  PEltype p = copy(slice.getContents().stream()
      .findFirst()
      .orElseThrow(() -> new ConvertException("At least one <p> must exist for content.")));
  p.setBegin(ConversionHelper.msToSmpteTimecode(slice.getBegin(), frameRate));
  p.setEnd(ConversionHelper.msToSmpteTimecode(slice.getEnd(), frameRate));
  p.getContent().clear();
  p.getContent().addAll(mergeContent(slice.getContents()));
  return p;
}