make config optional for editing images

Author: David Motsonashvili

firebase-ai/api.txt

@@ -110,6 +110,7 @@ package com.google.firebase.ai.java {
   }
 
   @com.google.firebase.ai.type.PublicPreviewAPI public abstract class ImagenModelFutures {
+    method public abstract com.google.common.util.concurrent.ListenableFuture<com.google.firebase.ai.type.ImagenGenerationResponse<com.google.firebase.ai.type.ImagenInlineImage>> editImage(java.util.List<? extends com.google.firebase.ai.type.ImagenReferenceImage> referenceImages, String prompt);
     method public abstract com.google.common.util.concurrent.ListenableFuture<com.google.firebase.ai.type.ImagenGenerationResponse<com.google.firebase.ai.type.ImagenInlineImage>> editImage(java.util.List<? extends com.google.firebase.ai.type.ImagenReferenceImage> referenceImages, String prompt, com.google.firebase.ai.type.ImagenEditingConfig? config = null);
     method public static final com.google.firebase.ai.java.ImagenModelFutures from(com.google.firebase.ai.ImagenModel model);
     method public abstract com.google.common.util.concurrent.ListenableFuture<com.google.firebase.ai.type.ImagenGenerationResponse<com.google.firebase.ai.type.ImagenInlineImage>> generateImages(String prompt);

firebase-ai/src/main/kotlin/com/google/firebase/ai/java/ImagenModelFutures.kt

@@ -59,6 +59,18 @@ public abstract class ImagenModelFutures internal constructor() {
     config: ImagenEditingConfig? = null
   ): ListenableFuture<ImagenGenerationResponse<ImagenInlineImage>>
 
+  /**
+   * Generates an image from a single or set of base images, returning the result directly to the
+   * caller.
+   *
+   * @param prompt the text input given to the model as a prompt
+   * @param referenceImages the image inputs given to the model as a prompt
+   */
+  public abstract fun editImage(
+    referenceImages: List<ImagenReferenceImage>,
+    prompt: String,
+  ): ListenableFuture<ImagenGenerationResponse<ImagenInlineImage>>
+
   /**
    * Generates an image by inpainting a masked off part of a base image.
    *
@@ -112,6 +124,12 @@ public abstract class ImagenModelFutures internal constructor() {
     ): ListenableFuture<ImagenGenerationResponse<ImagenInlineImage>> =
       SuspendToFutureAdapter.launchFuture { model.editImage(referenceImages, prompt, config) }
 
+    override fun editImage(
+      referenceImages: List<ImagenReferenceImage>,
+      prompt: String,
+    ): ListenableFuture<ImagenGenerationResponse<ImagenInlineImage>> =
+      editImage(referenceImages, prompt, null)
+
     override fun inpaintImage(
       image: ImagenInlineImage,
       prompt: String,