public static IEnumerable <ScriptSymbol> GetImportedScripts(this ScriptSymbol symbol)
        {
#if FALLOUT4
            var importedScriptIdentifiers = symbol?.File.CompilerType.pImportedTypes.Keys;
#elif SKYRIM
            var importedScriptIdentifiers = symbol?.Definition.Definitions.OfType <ImportNode>().Select(n => ObjectIdentifier.Parse(n.Identifier.Text));
#endif

            return(importedScriptIdentifiers?.
                   Select(name => ObjectIdentifier.Parse(name)).
                   Where(name => name != symbol.Id).
                   Except(symbol.GetExtendedScriptChain().Select(extended => extended.Id)).
                   Select(name => symbol.File.Program.ScriptFiles[name].Symbol));
        }