playframework - Play framework template parameter

i have view template accepts following parameter:

@(groups: list[models.groups.academicgroup]

i have academic group class:

@mappedsuperclass public abstract class academicgroup extends model

and subclass this:

@entity public class schoolclass extends academicgroup

calling view template within template works:

@views.html.panels.groups(schoolclasses.asinstanceof[java.util.list[models.groups.academicgroup]])

what isn't working, passing sublass directly via controller:

public static result schoolclasses() {     list<schoolclass> schoolclasses = schoolclass.find.all();      return ok(groups.render(schoolclasses)); }

with approach, error message:

the method render(list<academicgroup>) in type groups not applicable arguments (list<schoolclass>)

typecasting list doesn't work. there missing or there way implicitely accept subclass template parameter can java generics:

list<? extends academicgroup>

thanks serejja!

passing list[_ <: academicgroup] works!

this equal list<? extends academicgroup>

adding + sign carsten mentioned leads compiler error

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