In this example, Elements.hides(D::m, C::m) returns true:

% cat pkg/{D,C}.java
package pkg;

public interface D extends C {

    public static void m() { }
}
package pkg;

public interface C {

    public static void m() { }
}

From my reading of JLS 8.4.8.2. Hiding (by Class Methods), that should be false: "If A is an interface, m' is an instance method."