Extract functions from API (WIP)
Resolve function calls
Find usages provider
Highlight variables that can't be resolved
Structure view
Resolve to correct function if there a multiple signatures with the same name
Improved Javadoc for API functions.
Code completion
Rename variables
Resolve to multiple declarations for overloaded functions
Highlight function calls with  wrong number of parameters
Save API to a `gen` folder and show a notification if no API was generated