Make ImageOptions non-null when constructing ImagePrompt

  - Pass non-null ImageOptions when instantiating ImagePrompt

Signed-off-by: Ilayaperumal Gopinathan <[email protected]>

Author: ilayaperumalg

spring-ai-model/src/main/java/org/springframework/ai/image/ImagePrompt.java

@@ -29,12 +29,7 @@ public class ImagePrompt implements ModelRequest<List<ImageMessage>> {
 	private ImageOptions imageModelOptions;
 
 	public ImagePrompt(List<ImageMessage> messages) {
-		this.messages = messages;
-	}
-
-	public ImagePrompt(List<ImageMessage> messages, ImageOptions imageModelOptions) {
-		this.messages = messages;
-		this.imageModelOptions = imageModelOptions;
+		this(messages, ImageOptionsBuilder.builder().build());
 	}
 
 	public ImagePrompt(ImageMessage imageMessage, ImageOptions imageOptions) {
@@ -49,6 +44,11 @@ public ImagePrompt(String instructions) {
 		this(new ImageMessage(instructions), ImageOptionsBuilder.builder().build());
 	}
 
+	public ImagePrompt(List<ImageMessage> messages, ImageOptions imageModelOptions) {
+		this.messages = messages;
+		this.imageModelOptions = imageModelOptions != null ? imageModelOptions : ImageOptionsBuilder.builder().build();
+	}
+
 	@Override
 	public List<ImageMessage> getInstructions() {
 		return this.messages;