Type Hierarchy
Discover what types implement an interface or what interfaces are implemented by a type
The Type Hierarchy feature allows you to answer questions such as "What interfaces a type implements?" or "What the types are that implement an interface?"
How to use:
Invoke it using ⌃H (macOS) / Ctrl+H (Windows/Linux).
Pro tip:
You can dig deeper through the list of hierarchy to get as much information as you need.