public String getImageUrl() {
        return this.imageUrl;
    }
<p>
The URL of an image to display on the response card. The image URL must be publicly available so that the
platform displaying the response card has access to the image.
</p>

@return The URL of an image to display on the response card. The image URL must be publicly available so that the
        platform displaying the response card has access to the image.
aws-java-sdk-lexruntimev2/src/main/java/com/amazonaws/services/lexruntimev2/model/ImageResponseCard.java