## set_image(input_file_name, output_file_name, watermark_image_file_name) {#str_str_str} Adds an image watermark into the document. ```python def set_image(self, input_file_name: str, output_file_......_name, output_file_name, watermark_image_file_name) {#str_str_str}...{#str_str_str} Adds an image watermark into the document. ```python def...