@TaskAttribute for enums does not work

Please ensure you have given all the following requested information in your report.

Issue details

@TaskAttribute for enums does not work in the sense that any good value does not work. For exemple, let's suppose I was the one who created the Parallel task. I would add a public member variable named policy with the @TaskAttribute annotation. Then, to use it in a text file, I would import the class and specify if needed the policy variable like so : Parallel policy:"selector". "selector" is a good enum value.

Now, imagine the same problem but with a custom class that I made. Parallel actually works, I just needed it to demonstrate the problem.

Reproduction steps/code

Create a custom LeafTask

Add an enum task attribute

@TaskAttribute
public AnimationConvention animation;

Set it in a text file

import ...
# ...
playAnimation animation:"attack"

Notice that it's null by default, unless it was set in the constructor.

Version of gdx-ai and/or relevant dependencies

1.8.1 and 1.8.2-SNAPSHOT

I also made a stackoverflow question for that.

libgdx / gdx-ai