shift + tab does not work for Scala, Groovy, and possibly other kernels. Works for Python.

This is my first foray into Jupyter Notebooks. My background is in Java and Scala development in classical IDEs (e.g. IntelliJ, Eclipse).

I have Jupyter Notebook 5.0.0 installed with only two nbextensions: jupyter-js-widgets and beakerx 0.9.1.

My Python 3 notebooks allow me to use the tooltip feature (i.e. if I were to click shit+tab inside a method's parenthesis, I get expected arguments). However my Scala and Groovy notebooks do not (but I can run the cells just fine).

Is this expected or am I missing something? If this is expected, how do folks author in the notebooks without the ability to discover method arguments like you can in a standard IDE?

Thank you.