在Java REST API中在哪里初始化Firebase Admin SDK？

<dependency>
  <groupId>com.google.firebase</groupId>
  <artifactId>firebase-admin</artifactId>
  <version>7.0.0</version>
</dependency>

import com.google.auth.oauth2.GoogleCredentials;
import com.google.firebase.FirebaseApp;
import com.google.firebase.FirebaseOptions;

public class MainClass {
  public static void main(String[] args) {
    try {
      // 指定Firebase Admin SDK的配置文件路径
      FileInputStream serviceAccount = new FileInputStream("path/to/serviceAccountKey.json");

      // 构建Firebase Admin SDK的配置对象
      FirebaseOptions options = new FirebaseOptions.Builder()
        .setCredentials(GoogleCredentials.fromStream(serviceAccount))
        .build();

      // 初始化Firebase Admin SDK
      FirebaseApp.initializeApp(options);

      // 在这里进行其他的初始化操作或启动REST API服务器
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}