Hide constructors for System- and UserMessage

Author: Jonas-Isr

orchestration/src/main/java/com/sap/ai/sdk/orchestration/SystemMessage.java

@@ -4,14 +4,17 @@
 import java.util.LinkedList;
 import java.util.List;
 import javax.annotation.Nonnull;
+import lombok.AccessLevel;
 import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 import lombok.Value;
 import lombok.experimental.Accessors;
 import lombok.experimental.Tolerate;
 
 /** Represents a chat message as 'system' to the orchestration service. */
 @Value
 @Accessors(fluent = true)
+@RequiredArgsConstructor(access = AccessLevel.PACKAGE)
 public class SystemMessage implements Message {
 
   /** The role of the assistant. */

orchestration/src/main/java/com/sap/ai/sdk/orchestration/UserMessage.java

@@ -4,14 +4,17 @@
 import java.util.LinkedList;
 import java.util.List;
 import javax.annotation.Nonnull;
+import lombok.AccessLevel;
 import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 import lombok.Value;
 import lombok.experimental.Accessors;
 import lombok.experimental.Tolerate;
 
 /** Represents a chat message as 'user' to the orchestration service. */
 @Value
 @Accessors(fluent = true)
+@RequiredArgsConstructor(access = AccessLevel.PACKAGE)
 public class UserMessage implements Message {
 
   /** The role of the assistant. */