trying to make a place event, I don't understand why I can get it because I've imported "import net.minecraftforge.event.world.BlockEvent;"

 

package com.example.examplemod;

import net.minecraftforge.event.world.BlockEvent;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.Mod;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.util.stream.Collectors;

import static net.minecraft.command.arguments.FunctionArgument.function;
import static net.minecraft.entity.EntityType.CREEPER;

// The value here should match an entry in the META-INF/mods.toml file
@Mod("examplemod")
public class ExampleMod
{
    // Directly reference a log4j logger.
    private static final Logger LOGGER = LogManager.getLogger();

    public ExampleMod() {

    }
    @SubscribeEvent
    public void onBlockDropItems(BlockEvent.PlaceEvent event) {
        System.out.println("ok");
    }
}

 

The Event is called BlockEvent$EntityPlaceEvent