presto-cli/src/main/java/io/prestosql/cli/TsvPrinter.java/TsvPrinter/TsvPrinter
class TsvPrinter:    public TsvPrinter(List<String> fieldNames, Writer writer, boolean header)
    {
        this.fieldNames = ImmutableList.copyOf(requireNonNull(fieldNames, "fieldNames is null"));
        this.writer = requireNonNull(writer, "writer is null");
        this.needHeader = header;
    }