Bukkit multiline YAML test

config.yml

test:
  message_normal: |
    This is a
    
    
    string with newlines
    
    
  message_chomped: |-
    This is a
    
    
    string with newlines
    
  message_raw: |+
    This is a
    
    
    string with newlines
    
    

TestPlugin.java

package com.github.jikoo;

import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.event.Listener;
import org.bukkit.plugin.java.JavaPlugin;
import org.jetbrains.annotations.NotNull;

public class TestPlugin extends JavaPlugin implements Listener {

  @Override
  public void onEnable() {
    saveDefaultConfig();
  }

  @Override
  public boolean onCommand(
      @NotNull CommandSender sender,
      @NotNull Command command,
      @NotNull String label,
      @NotNull String[] args
  ) {
    sender.sendMessage("---------");
    for (int i = 0; i < 3; ++i) {
      sender.sendMessage(getMessage(i));
      sender.sendMessage("---------");
    }
    return true;
  }

  private String getMessage(int index) {
    return switch (index) {
      case 0 -> getConfig().getString("test.message_normal", "test.message_normal");
      case 1 -> getConfig().getString("test.message_chomped", "test.message_chomped");
      case 2 -> getConfig().getString("test.message_raw", "test.message_raw");
      default -> "";
    };
  }

}