ConcatenatedCharSource(Iterable<? extends CharSource> sources) {
      this.sources = checkNotNull(sources);
    }

    @Override
    public Reader openStream() throws IOException {
      return new MultiReader(sources.iterator());
    }

    @Override
    public boolean isEmpty() throws IOException {
      for (CharSource source : sources) {
        if (!source.isEmpty()) {
          return false;
        }

    ConcatenatedCharSource(Iterable<? extends CharSource> sources) {
      this.sources = checkNotNull(sources);
    }

    @Override
    public Reader openStream() throws IOException {
      return new MultiReader(sources.iterator());
    }

    @Override
    public boolean isEmpty() throws IOException {
      for (CharSource source : sources) {
        if (!source.isEmpty()) {
          return false;
        }

				unmarshaled:                true,
			}
			if !c.header {
				args.FileHeaderInfo = none
			}
			inr := io.Reader(bytes.NewReader(input))
			if c.sendErr != nil {
				inr = io.MultiReader(inr, errReader{c.sendErr})
			}
			r, _ := NewReader(io.NopCloser(inr), &args)
			fields := 0
			for {
				record, err = r.Read(record)
				if err != nil {
					break
				}