private void doShowModal(int delay) {
		//
		// Note: we must block, since we are modal.  Clients want us to finish the task before
		//       returning
		//
		giveTheTaskThreadAChanceToComplete(delay);

		if (isCompleted()) {
			return;
		}

		doShow();
	}
Returns true if this dialog was ever made visible
@return true if shown
Ghidra/Framework/Docking/src/main/java/ghidra/util/task/TaskDialog.java