content: /*
   * Copyright 2025 the original author or authors.
   *
   * 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
   *
   *      https://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 io.agentscope.runtime.engine.memory.model;
  
  /**
   * Message type enumeration
   */
  public enum MessageType {
      MESSAGE,
      SYSTEM,
      USER,
      ASSISTANT,
      FUNCTION_CALL,
      FUNCTION_CALL_OUTPUT,
      PLUGIN_CALL,
      PLUGIN_CALL_OUTPUT,
      COMPONENT_CALL,
      COMPONENT_CALL_OUTPUT,
      MCP_LIST_TOOLS,
      MCP_APPROVAL_REQUEST,
      MCP_TOOL_CALL,
      MCP_APPROVAL_RESPONSE,
      HEARTBEAT,
      ERROR
  }
  