diff --git a/src/ImageManipulation/ImageManipulation.py b/src/ImageManipulation/ImageManipulation.py
index caef028..5f901c4 100644
--- a/src/ImageManipulation/ImageManipulation.py
+++ b/src/ImageManipulation/ImageManipulation.py
@@ -7,13 +7,14 @@ class ImageManipulation(ABC):
     """Abstract base class for image manipulation operations."""
 
     @abstractmethod
-    def manipulateImage(self, image: ImageContainer, parameters: Any) -> None:
+    def manipulateImage(self, image: ImageContainer, parameters: Any) -> ImageContainer:
         """
         Manipulate the given image using the provided parameters.
 
         Args:
             image: The image to manipulate
             parameters: Parameters for the manipulation
+        Returns: The manipulated image
         """
         pass