content: /**
   * Copyright (C) 2024 AIDC-AI
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.langengine.core.model.fastchat.messages;
  
  import com.fasterxml.jackson.annotation.JsonProperty;
  import lombok.AllArgsConstructor;
  import lombok.Data;
  import lombok.NoArgsConstructor;
  
  /**
   * A list of files attached to a Message
   * <p>
   * https://platform.openai.com/docs/api-reference/messages/file-object
   */
  @NoArgsConstructor
  @AllArgsConstructor
  @Data
  public class MessageFile {
      /**
       * The identifier, which can be referenced in API endpoints.
       */
      String id;
  
      /**
       * The object type, which is always thread.message.file.
       */
      String object;
  
      /**
       * The Unix timestamp (in seconds) for when the message file was created.
       */
      @JsonProperty("created_at")
      int createdAt;
  
      /**
       * The ID of the message that the File is attached to.
       */
      @JsonProperty("message_id")
      String messageId;
  }
  