private void symbolChanged(ProgramChangeRecord rec) {
		Symbol sym = (Symbol) rec.getNewValue();
		Address addr = sym.getAddress();
		Function function = currentProgram.getListing().getFunctionAt(addr);
		if (function != null) {
			provider.update(function);
		}
	}
Kicks the tool actions to set the proper enablement when selection changes
on the function table
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/functionwindow/FunctionWindowPlugin.java