protected void clearText() {
		runSwing(() -> {
			textField.setSelectionStart(0);
			textField.setSelectionEnd(textField.getText().length());
		});
		waitForSwing();
		delete();
	}
The 'selectedValue' made after the user makes a choice
Ghidra/Framework/Docking/src/test/java/docking/widgets/AbstractDropDownTextFieldTest.java