doublestar | Implements support for double star matches | Awesome List library

JLS 5.1.9 defines the unchecked conversion as follows :

Let G name a generic type declaration with n type parameters.

There is an unchecked conversion from the raw class or interface type G to any parameterized type of the form G.

There is an unchecked conversion from the raw array type G[] to any array type type of the form G[].

Use of an unchecked conversion causes a compile-time unchecked warning unless G<...> is a parameterized type in which all type arguments are unbounded wildcards, or the unchecked warning is suppressed by the SuppressWarnings annotation

As far as I can understand it says that unchecked conversion occurs if you cast a raw type to a generic type with bounded type parameters. then why following code generates a unchecked warning: