def _get_messages()

in data/datasets.py [0:0]


    def _get_messages(self, item, image_count=0):
        messages = []
        for text in item['texts']:
            messages.append({"role": "user", "content": text['user']})
            messages.append({"role": "assistant", "content": text['assistant']})

        if image_count > 0:
            messages[0]["content"] = self.tokenizer.image_token * image_count * self.mp_image_token_length + messages[0]["content"]      

        return messages