Enables 'Find remote usages' action.
General usage instructions
JetBrains internal plugin to find remote usages.
You have to be in JetBrains internal network to use it.
Right mouse click on any method call: System.out.pri(right click here)ntln
Choose Find external usages
Enjoy! We haven't indexed whole github, but have plenty of examples (around 2mln of method calls)