@Override
		public boolean isCancelled() {
			for (int i = 0; i < monitors.size(); i++) {
				TaskMonitor tm = monitors.get(i);
				if (tm.isCancelled()) {
					return true;
				}
			}
			return false;
		}
Holds any message that may have been set while waiting for the dialog to appear
Ghidra/Framework/Docking/src/main/java/ghidra/util/task/CachingSwingWorker.java