@Override
	void editLabel(JComponent parentComponent) {
		AddressSetView view = listingPanel.getView();
		Address minAddress = view.getMinAddress();
		SymbolTable symbolTable = program.getSymbolTable();
		Symbol primarySymbol = symbolTable.getPrimarySymbol(minAddress);

		AddEditDialog dialog = new AddEditDialog("", tool);
		if (primarySymbol == null) {
			dialog.addLabel(minAddress, program, parentComponent);
		}
		else {
			dialog.editLabel(primarySymbol, program, parentComponent);
		}
	}
Signals to rebuild this component's data model.  This call should not do any real work
if the model is not 'dirty'.
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/vertex/ListingGraphComponentPanel.java