ManagedReference

Managed Reference The SerializeReference attribute, added in Unity 2019.3, makes it possible to serialize references to interfaces and abstract classes.

The ManagedReference attribute allows you to easily set subclasses of those abstract classes in the Editor that are serialized by SerializeReference attribute.

Features

• Set a subclasses from dropdown
• Group classes by the ManagedReferenceGroupAttribute with custom groupname
• Create arrays of subclasses

Install via git URL

https://github.com/avmedvedskiy/ManagedReference.git

from the Add package from git URL option.