private void setFunctionInfo() {
		if (initialized) {
			return;
		}
		initialized = true;

		signatureField.setText(getPrototypeString());
		setCallingConventionChoices();
		callingConventionComboBox.setSelectedItem(getCallingConventionName());
		if (allowInLine) {
			inlineCheckBox.setSelected(isInline());
		}
		if (allowNoReturn) {
			noReturnCheckBox.setSelected(hasNoReturn());
		}
		if (allowCallFixup) {
			setCallFixupChoices();

			String callFixupName = getCallFixupName();
			if (callFixupName != null) {
				callFixupComboBox.setSelectedItem(callFixupName);
			}
		}
	}
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