private void addListeners() {
		lengthField.setChangeListener(new LengthChangeListener());

		ActionListener al = e -> setStatusText("");
		startField.addActionListener(al);
		endField.addActionListener(al);
		lengthField.addActionListener(al);
		startAddressInput.addActionListener(al);
		endAddressInput.addActionListener(al);
	}
Create the main work panel.
@return JPanel
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/memory/ExpandBlockDialog.java