RuntimeException while generating SDK doc

[FroMage]

Originally reported by @jpragey at eclipse-archived/ceylon-sdk#218:

Generating SDK doc throws a RuntimeException, so a few modules (eg ceylon.interop) don't have any generated doc.
The same exception is thrown when I run ant doc manually in ceylon-sdk :

[ceylon-doc] ceylon doc: Unknown type argument type: T[]
[ceylon-doc] java.lang.RuntimeException: Unknown type argument type: T[]
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.addTypeArguments(ReflectionUtils.java:352)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.getTypeArgumentsMap(ReflectionUtils.java:329)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.getTypeArgumentsForSuperType(ReflectionUtils.java:319)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.getTypeArguments(ReflectionUtils.java:297)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.isOverloadingMethodInClass(ReflectionUtils.java:216)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.isOverXingMethodInClass(ReflectionUtils.java:158)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.isOverXingMethodInClassRecursive(ReflectionUtils.java:138)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.isOverXingMethod(ReflectionUtils.java:122)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionUtils.isOverloadingMethod(ReflectionUtils.java:106)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.mirror.ReflectionMethod.isOverloadingMethod(ReflectionMethod.java:220)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.impl.reflect.ReflectionModelLoader.isOverloadingMethod(ReflectionModelLoader.java:146)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.AbstractModelLoader.addMethod(AbstractModelLoader.java:2207)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.AbstractModelLoader.complete(AbstractModelLoader.java:1877)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.AbstractModelLoader.complete(AbstractModelLoader.java:1717)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.model.LazyClass.load(LazyClass.java:116)
[ceylon-doc]    at com.redhat.ceylon.compiler.loader.model.LazyClass.getExtendedTypeDeclaration(LazyClass.java:215)
[ceylon-doc]    at com.redhat.ceylon.ceylondoc.Util.isException(Util.java:311)
[ceylon-doc]    at com.redhat.ceylon.ceylondoc.ClassDoc.loadMembers(ClassDoc.java:115)
[ceylon-doc]    at com.redhat.ceylon.ceylondoc.ClassDoc.<init>(ClassDoc.java:92)
[ceylon-doc]    at com.redhat.ceylon.ceylondoc.CeylonDocTool.doc(CeylonDocTool.java:933)
[ceylon-doc]    at com.redhat.ceylon.ceylondoc.CeylonDocTool.doc(CeylonDocTool.java:834)
[ceylon-doc]    at com.redhat.ceylon.ceylondoc.CeylonDocTool.documentModule(CeylonDocTool.java:609)
[ceylon-doc]    at com.redhat.ceylon.ceylondoc.CeylonDocTool.makeDoc(CeylonDocTool.java:537)
[ceylon-doc]    at com.redhat.ceylon.ceylondoc.CeylonDocTool.run(CeylonDocTool.java:515)
[ceylon-doc]    at com.redhat.ceylon.common.tools.CeylonTool.run(CeylonTool.java:343)
[ceylon-doc]    at com.redhat.ceylon.common.tools.CeylonTool.execute(CeylonTool.java:283)
[ceylon-doc]    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ceylon-doc]    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[ceylon-doc]    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ceylon-doc]    at java.lang.reflect.Method.invoke(Method.java:601)
[ceylon-doc]    at com.redhat.ceylon.launcher.Launcher.run(Launcher.java:82)
[ceylon-doc]    at com.redhat.ceylon.ant.CeylonAntTask.executeCommandline(CeylonAntTask.java:144)
[ceylon-doc]    at com.redhat.ceylon.ant.CeylonAntTask.execute(CeylonAntTask.java:123)
[ceylon-doc]    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
[ceylon-doc]    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ceylon-doc]    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[ceylon-doc]    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ceylon-doc]    at java.lang.reflect.Method.invoke(Method.java:601)
[ceylon-doc]    at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[ceylon-doc]    at org.apache.tools.ant.Task.perform(Task.java:348)
[ceylon-doc]    at org.apache.tools.ant.Target.execute(Target.java:390)
[ceylon-doc]    at org.apache.tools.ant.Target.performTasks(Target.java:411)
[ceylon-doc]    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
[ceylon-doc]    at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
[ceylon-doc]    at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[ceylon-doc]    at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
[ceylon-doc]    at org.apache.tools.ant.Main.runBuild(Main.java:809)
[ceylon-doc]    at org.apache.tools.ant.Main.startAnt(Main.java:217)
[ceylon-doc]    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
[ceylon-doc]    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)

[FroMage]

Fixed