>
> @old hooky
>
what should be return type of

public List<String> invoke(File ws, VirtualChannel channel) function.
Here it is throwing error , attempting to use incompatible return type.

I have defined a inner class
 private static final class  AttachmentLister implements FileCallable{
@override
public List<String> invoke(File ws, VirtualChannel channel){
}
}

Note: I want to return invoke function a list, but it is giving error...how 
to handle it.

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