MFormatter formatter = makeFormatter(text, 100, true);
Rectangle viewRect = new Rectangle(0, 0, 100, Integer.MAX_VALUE);
formatter.stopBackgroundFormatting();
text.append(new StyledText("\n", PLAIN));
formatter.updateFormat(text.length()-1, 1, viewRect, ORIGIN);
_testLineAccess(formatter, 6);
formatter.stopBackgroundFormatting();
text.append(new StyledText("ad", PLAIN));