public void setText() {
		String newText =
			OptionDialog.showInputSingleLineDialog(null, "Input Spacer Text", "Text", text);
		if (newText != null) {
			newText = newText.trim();
			if (newText.equals("")) {
				text = null;
			}
			else {
				text = newText;
			}
		}
		model.update();
	}
Sets the literal text to display in this field.
Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/field/SpacerFieldFactory.java