Weird Error

src/main/java/net/strangergamer/mccourse/MCCourseMod.java

@@ -1,5 +1,6 @@
 package net.strangergamer.mccourse;
 
+import net.strangergamer.mccourse.block.ModBlocks;
 import net.strangergamer.mccourse.item.ModCreativeModeTabs;
 import net.strangergamer.mccourse.item.ModItems;
 import org.slf4j.Logger;
@@ -32,10 +33,16 @@ public MCCourseMod(IEventBus modEventBus, ModContainer modContainer) {
         // Register the commonSetup method for modloading
         modEventBus.addListener(this::commonSetup);
 
+
+
         ModCreativeModeTabs.register(modEventBus);
 
         ModItems.register(modEventBus);
 
+        ModBlocks.register(modEventBus);
+
+
+
         // Register ourselves for server and other game events we are interested in.
         // Note that this is necessary if and only if we want *this* class (ExampleMod) to respond directly to events.
         // Do not add this line if there are no @SubscribeEvent-annotated functions in this class, like onServerStarting() below.

src/main/java/net/strangergamer/mccourse/block/ModBlocks.java

@@ -0,0 +1,27 @@
+package net.strangergamer.mccourse.block;
+
+import net.minecraft.world.level.block.Block;
+import net.neoforged.bus.api.IEventBus;
+import net.neoforged.neoforge.registries.DeferredBlock;
+import net.neoforged.neoforge.registries.DeferredRegister;
+import net.strangergamer.mccourse.MCCourseMod;
+
+import java.util.function.Supplier;
+
+public class ModBlocks {
+    public static final DeferredRegister.Blocks BLOCKS =
+            DeferredRegister.createBlocks(MCCourseMod.MOD_ID);
+
+
+    private static <T extends Block> DeferredBlock<T> registerBlock(String name, Supplier<T> block) {
+        DeferredBlock<T> toReturn = BLOCKS.register(name, block);
+        registerBlockItem(name, toReturn);
+        return toReturn
+
+    public static void register(IEventBus eventBus) {
+        BLOCKS.register(eventBus);
+    }
+}
+
+    private static <T extends Block> void registerBlockItem(String name, DeferredBlock<T> Block) {
+    }