ADF: Defining an attribute-class for an array of objects in ADF template

When defining the attributes for an ADF Faces af:pageTemplate or af:declarativeComponent inside of an af:xmlContent, you need to provide an attribute-class definition. This looks something like:

but what if you needed an array of Strings? That has a bit stranger syntax:

Why is this not just "java.lang.String[]"? These attribute-class entries are the result of calling Class.forName.

 The Class.forName on an array of objects looks like "[[Lsome.package.SomeClass;".