如何在flask中更新JWT身份？

from flask_jwt_extended import jwt_required, get_jwt_identity, create_access_token, get_jwt_claims

@app.route('/protected', methods=['GET'])
@jwt_required()
def protected_route():
    # 访问该路由的请求必须携带有效JWT令牌
    return "You have access to this protected route."

@app.route('/protected', methods=['GET'])
@jwt_required()
def protected_route():
    current_user_id = get_jwt_identity()
    # 获取当前用户的身份标识
    return f"Current User ID: {current_user_id}"

@app.route('/refresh', methods=['POST'])
@jwt_required(refresh=True)
def refresh_route():
    current_user_id = get_jwt_identity()
    new_token = create_access_token(identity=current_user_id)
    # 生成新的JWT令牌，并将其返回给客户端
    return {'access_token': new_token}