Enable code mining for method references by default

Code minings in Eclipse are hard to discover for users, other IDEs enable (some) of them by default, hence making it obvious that they have it. In a recent workshop my clients were really surprised that the Eclipse IDE also has these.

I setting which I find useful and non-disruptive is the display of a method usage on top of methods.


Maybe we should enable this by default? This would signal to the user that we also support this.

cc @mickaelistria @jjohnstn

No source file or test is named. Start by locating the Eclipse code-mining preference for displaying method usages, then inspect how its default is defined. Done means method-usage code mining is enabled by default and appears above methods in a fresh Eclipse setup.

Written by the indexing model from the issue text.