Fix TestCommand

SpigotCore_Main/src/de/steamwar/acommand/TestCommand.java

@@ -44,21 +44,21 @@ public class TestCommand extends SWCommand {
     // Another Command, subCommands can be implemented with the Register Annotation,
     // you can use custom Mappers by putting a Mapper Annotation on a Parameter
     @Register({"two"})
-    public void testTwo(Player player, int i, @Mapper("Hello World") Material material) {
+    public void testTwo(Player player, int i, @Mapper("solidMaterial") Material material) {
 
     }
 
     // Add Custom Mapper when this command is registered, all Mapper of you class will be
     // created first and than the Commands. Do not use this mapper outside your class, as
     // it can only create failures. Use on your own risk. Definition order should be considered.
-    @Mapper("Hello World")
+    @Mapper("solidMaterial")
     public TypeMapper<Material> materialTypeMapper() {
         List<String> tabCompletes = Arrays.stream(Material.values())
                 .filter(Material::isSolid)
                 .map(Material::name)
                 .map(String::toLowerCase)
                 .collect(Collectors.toList());
-        return new TypeMapper<>() {
+        return new TypeMapper<Material>() {
             @Override
             public Material map(String s) {
                 return Material.valueOf(s.toUpperCase());