def find_faces_url_input(content_type, image_url, cache_image:nil, custom_headers:nil)
      response = find_faces_url_input_async(content_type, image_url, cache_image:cache_image, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def find_faces_url_input(content_type, image_url, cache_image:nil, custom_headers:nil)
      response = find_faces_url_input_async(content_type, image_url, cache_image:cache_image, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Returns the list of faces found.

 @param content_type [String] The content type.
 @param image_url [ImageUrl] The image url.
 @param cache_image [Boolean] Whether to retain the submitted image for future
 use; defaults to false if omitted.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [FoundFaces] operation results.