public void setCompletionListVisible(boolean visible) {
		if (visible) {
			if (completionWindow == null) {
				buildCompletionWindow();
			}
			else if (completionWindow.getOwner() != WindowUtilities.windowForComponent(focus)) {
				destroyCompletionWindow();
				buildCompletionWindow();
			}
			completionWindow.setVisible(true);
		}
		else if (completionWindow != null) {
			completionWindow.setVisible(false);
		}
	}
Show or hide the completion list window

@param visible true to show, false to hide
Ghidra/Framework/Docking/src/main/java/docking/widgets/autocomplete/TextFieldAutocompleter.java