Not really. It's hard for your editor to do this statically, but there's heaps of good tooling for finding the method source and docs dynamically.

  pry> show-source SomeClass.class_method
  pry> show-source AnotherClass#instance_method
  # List an arbitrary object's class methods, instance methods, methods mixed in by included modules
  pry> cd some_object
  pry> ls

The runtime knows how to execute your program (it's not random) so everything you want to know is available.