I am trying to register a new Block but in 1.20.4 there seems to be no BlockBehaviour.Properties.copy() anymore, and i have no clue how to use BlockBehaviour.Properties.of() and can't find a documentation for it (other sources stated i can but Material.STONE in it but that doesnt work either). Here is the part where i'm stuck:

public static final RegistryObject<Block> RADIO= registerBlock("radio", () -> new Block(BlockBehaviour.Properties.of()

and this is my whole class yet:
 

package de.groupxyz.radiomod.block; import de.groupxyz.radiomod.RadioMod; import de.groupxyz.radiomod.item.ModItems; import net.minecraft.world.item.BlockItem; import net.minecraft.world.item.Item; import net.minecraft.world.level.block.Block; import net.minecraft.world.level.block.state.BlockBehaviour; import net.minecraftforge.eventbus.api.IEventBus; import net.minecraftforge.registries.DeferredRegister; import net.minecraftforge.registries.ForgeRegistries; import net.minecraftforge.registries.RegistryObject; import java.util.function.Supplier; public class ModBlocks { public static final DeferredRegister<Block> BLOCKS = DeferredRegister.create(ForgeRegistries.BLOCKS, RadioMod.MODID); public static final RegistryObject<Block> RADIO= registerBlock("radio", () -> new Block(BlockBehaviour.Properties.of() private static <T extends Block> RegistryObject<T> registerBlock(String name, Supplier<T> block) { RegistryObject<T> toReturn = BLOCKS.register(name, block); registerBlockItem(name, toReturn); return toReturn; } private static <T extends Block>RegistryObject<Item> registerBlockItem(String name, RegistryObject<T> block) { return ModItems.ITEMS.register(name, () -> new BlockItem(block.get(), new Item.Properties())); } public static void register(IEventBus eventBus) { BLOCKS.register(eventBus); } }

Thanks for any help!

Yes, it is quite annoying how there are not any very handy ways to find ways to fix errors, however you can just simply use 

.of()

and specify the properties, here is it used in a example peice of code for a mod I am creating

public static final RegistryObject<Block> HYPER_ORE = registerBlock("hyper_ore",
            () -> new Block(BlockBehaviour.Properties.of().mapColor(MapColor.METAL).instrument(NoteBlockInstrument.IRON_XYLOPHONE).requiresCorrectToolForDrops().strength(5.0F, 6.0F).sound(SoundType.METAL)));

Hope this helped for your 1.20.4 mod!