added new sdk version syntax

src/main/java/com/resend/Main.java

@@ -1,8 +1,5 @@
 package com.resend;
 
-import com.resend.core.provider.AuthenticationProvider;
-import com.resend.core.provider.impl.AuthenticationProviderStandard;
-import com.resend.services.emails.ResendEmails;
 import com.resend.services.emails.model.Attachment;
 import com.resend.services.emails.model.SendEmailRequest;
 import com.resend.services.emails.model.SendEmailResponse;
@@ -14,10 +11,7 @@
 public class Main {
     public static void main(String[] args) {
 
-        String apiKey = "re_123";
-
-        AuthenticationProvider provider = new AuthenticationProviderStandard(apiKey);
-        ResendEmails emailClient = new ResendEmails(provider);
+        Resend resend = new Resend("re_123456789");
 
         String fileContent = null;
         try {
@@ -33,19 +27,16 @@ public static void main(String[] args) {
                 .build();
 
         SendEmailRequest sendEmailRequest = SendEmailRequest.builder()
-                .from("Me <[email protected]>")
-                .to("to@example", "[email protected]")
-                .cc("[email protected]", "[email protected]")
-                .bcc("[email protected]", "[email protected]")
-                .replyTo("[email protected]", "[email protected]")
+                .from("Acme <[email protected]>")
+                .to("[email protected]")
                 .attachments(att)
-                .text("Hello, world!")
+                .html("<strong>It works!</strong")
                 .subject("Hello from Java!")
                 .build();
 
-        SendEmailResponse ser = emailClient.sendEmail(sendEmailRequest);
+        SendEmailResponse data = resend.emails().send(sendEmailRequest);
 
-        System.out.println(ser.getId());
+        System.out.println(data.getId());
 
     }
 }