@Override
	public void close() {
		// override default close behavior to prevent dispose() from being called before
		// the password value is retrieved
		closeDialog();
	}
Simple dialog with single input field to prompt user for password.
<p>
User can cancel, or cancel-all, which can be determined by inspecting
the value of the semi-visible member variables.
<p>
Treat this as an internal detail of PopupGUIPasswordProvider.
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/crypto/PasswordDialog.java