protected void closeMatchingWindow() {
		JWindow window = runSwing(() -> textField.getActiveMatchingWindow());
		if (window == null) {
			return;
		}
		runSwing(() -> window.setVisible(false));
	}
The 'selectedValue' made after the user makes a choice
Ghidra/Framework/Docking/src/test/java/docking/widgets/AbstractDropDownTextFieldTest.java