import net.minecraft.text.Text;
import org.quiltmc.loader.api.ModContainer;
import org.quiltmc.qsl.base.api.entrypoint.ModInitializer;
import org.quiltmc.qsl.command.api.CommandRegistrationCallback;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static net.minecraft.server.command.CommandManager.literal;

public class ExampleMod implements ModInitializer {
    public static final Logger LOGGER = LoggerFactory.getLogger("Example Mod");
    @Override
    public void onInitialize(ModContainer mod) {
        CommandRegistrationCallback.EVENT.register((dispatcher, registryAccess, environment) -> dispatcher.register(literal("foo")
                .executes(context -> {
                    // For versions below 1.19, replace "Text.literal" with "new LiteralText".
                    context.getSource().sendFeedback(Text.literal("Hello There"), false);

                    return 1;
                })));
    }
}