@Override
    public String toString() {
        return "HexDumpLine{" +
                "line='" + line + '\'' +
                ", lineNo=" + lineNo +
                ", byteOffsetRange=" + byteOffsetRange +
                '}';
    }
@return The size of the hex dump line when output as a string. Not the
number of chars rendered by the hex dump.
stroom-util-shared/src/main/java/stroom/util/shared/string/HexDumpLine.java