@Override
    public Stream open(final InputStream in) throws IOException {
        return openWithOffsetInJsonPointer(in, null);
    }
Parses the stringified JSON {@link java.io.InputStream} to {@link Stream}.

@param in  stringified JSON {@link java.io.InputStream} to parse
@return a stream of parsed {@link org.msgpack.value.Value}
embulk-deps/src/main/java/org/embulk/deps/json/JsonParserDelegateImpl.java