String getExceptionMessage() {
			Throwable throwable = getException();
			String message = throwable.getMessage();
			if (message != null) {
				return message;
			}

			return getCauseExceptionMessage(throwable);
		}
Call this version of {@link #runSwing(Runnable)} when you expect your runnable <b>may</b>
throw exceptions

@param callback the runnable code snippet to call
@throws Exception any exception that is thrown on the Swing thread
Ghidra/Framework/Gui/src/main/java/generic/test/AbstractGuiTest.java