static Expose GetExposedPackages()
{
#if UNITY_2019_1_OR_NEWER
return(Expose.FromType(tPackageCollection)["packages"]);
#else
if (_exPackageWindow == null || !_exPackageWindow.As <EditorWindow>())
{
_exPackageWindow = GetExposedPackageWindow();
}
return(_exPackageWindow["Collection"] ["packages"]);
#endif
}