How to create a ConcavePoligon2D?

:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By genete
:warning: Old Version Published before Godot 3 was released.

Currently the CollisionPoligon2D node editor only helper, produces always ConvexPolygon2D resources assigned to the CollisionObject2D it is children of.
So, what’s the ConvexPoligon2D node type for? How can it be created? Only by script?