private void fireUserChoiceMade(T selectedItem) {
		for (DropDownSelectionChoiceListener<T> listener : choiceListeners) {
			listener.selectionChanged(selectedItem);
		}
	}
Removes the given listener from this class if it has previously been added.
@param listener The listener to remove.
Ghidra/Framework/Docking/src/main/java/docking/widgets/DropDownTextField.java