### Question:
PrintPayload implements Jsonable { public String getPrinterId() { return printerId; } PrintPayload();  PrintPayload(String printerId); TextRow append(String text); TextRow append(String text, PrinterFont printerFont); void append(PrintPayload toAppendPayload); void appendEmptyLine(); TextRow appendLineOfChar(int columns, String character); TextRow appendLeftRight(int columns, String left, String right); ImageRow append(Bitmap image); ImageRow append(Bitmap image, boolean scaleToFit); PrintRow[] getRows(); int getCodePage(); void setCodePage(int codePage); String getLanguage(); void setLanguage(String languageCode); void setPrinterId(String printerId); String getPrinterId(); boolean hasPrinterId(); @Override String toJson(); static PrintPayload fromJson(String json);  }### Answer:
@Test public void willSetPrinterId() { PrintPayload payload = new PrintPayload("17676767"); assertThat(payload.getPrinterId()).isEqualTo("17676767"); }