[...]
    public CommandManager commandManager;
    public void start() {
        [...]
        commandManager = new CommandManager();
        Display.setTitle("Coreium");
        moduleManager.loadMods();
        commandManager.loadCommands();
        [...]
    }
    [...]

    [...]
    public Module getModule(String name) {
        for (Module m : modules) {
            if (m.getName().equalsIgnoreCase(name))
                return m;
        }
        return null;
    }
    [...]

package cn.enaium.coreium.utils;

import com.mojang.realmsclient.gui.ChatFormatting;
import net.minecraft.client.Minecraft;

public class PlayerUtils {
    public static void tellPlayer(String text) {
        Minecraft.getMinecraft().ingameGUI.getChatGUI().printChatMessage(new ChatComponentText(
                ChatFormatting.WHITE + "[" + ChatFormatting.RED + "Coreium" + ChatFormatting.WHITE + "] " + text));
    }
}

    public void sendChatMessage(String message) {
        if (!Coreium.INSTANCE.commandManager.processCommand(message)) {
            this.sendQueue.addToSendQueue(new C01PacketChatMessage(message));
        }
    }