protected void registerListener() {
			listener = new DualFieldListener(this);
			field.addCaretListener(listener);
			field.getDocument().addDocumentListener(listener);
			field.addKeyListener(listener);
			field.addFocusListener(listener);
		}
A field that has been added with its corresponding separator expression and replacement
Ghidra/Framework/Docking/src/main/java/docking/widgets/textfield/TextFieldLinker.java