In Servoy 6.1 we have documented many deprecated methods so that you know what to use or call instead of this deprecated method.
Problem is that if deprecation is also a builder marker (error/warning) then you will see the documentation of the problem, not the doc of the method/field itself.
In 6.1 we have made a default modifier to the hover, that will show you the doc, and that is ALT, so when pressing the ALT key and hover over the call, it will show you the documentation and then also the @deprecated tag with a description what to use.
If you see things that don't have a nice description behind the deprecation tag, please make a case so that we can improve that doc.
In 6.0 you can also get that same behavior by going into the preferences of the developer, then Javascript -> Editor -> Hover. Here you can configure which hover you will see, when you press or don't press a modifier.