## 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_...... input_stream: io.BytesIO, output_stream: io.BytesIO, save_format:...SaveFormat, watermark_image_stream: io.BytesIO): ... ``` | Parameter...