Autocomplete functions and attributes of variables in debug console

[RoelsL]

Feature description or problem with existing feature
It would be nice to have autocomplete suggestions appearing when referencing variables that already have a know class in the debug console.
Just like when typing $variable-> in a normal editor screen, a bunch of suggestions pop up.

Describe the solution you'd like
Debug console now only autocompletes history based.
Would be nice to also have this autocomplete object based functions and attributes.

Additional context
In my context, this is used for Drupal based functions but this should be extended to all frameworks/PHP based projects.