public DetectFacesResult withFaceDetails(FaceDetail... faceDetails) {
        if (this.faceDetails == null) {
            setFaceDetails(new java.util.ArrayList<FaceDetail>(faceDetails.length));
        }
        for (FaceDetail ele : faceDetails) {
            this.faceDetails.add(ele);
        }
        return this;
    }
<p>
Details of each face found in the image.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setFaceDetails(java.util.Collection)} or {@link #withFaceDetails(java.util.Collection)} if you want to
override the existing values.
</p>

@param faceDetails
       Details of each face found in the image.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-rekognition/src/main/java/com/amazonaws/services/rekognition/model/DetectFacesResult.java