private JPanel buildAttributePanel() {
		JPanel attributePanel = new JPanel();
		attributePanel.setLayout(new BoxLayout(attributePanel, BoxLayout.X_AXIS));
		attributePanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

		installCallingConventionWidget(attributePanel);
		if (allowInLine) {
			installInlineWidget(attributePanel);
		}
		if (allowNoReturn) {
			installNoReturnWidget(attributePanel);
		}
		attributePanel.add(Box.createGlue());

		attributePanel.getAccessibleContext().setAccessibleName("Attribute");

		return attributePanel;
	}
Method must be invoked following construction to fetch function info 
and update components.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/AbstractEditFunctionSignatureDialog.java