如何解析使用的路由版本以访问Flask-Restful端点

from flask import Flask
from flask_restful import Api, Resource

app = Flask(__name__)
api = Api(app)

class MyResourceV1(Resource):
    def get(self):
        return {'message': 'This is version 1 of the API'}

class MyResourceV2(Resource):
    def get(self):
        return {'message': 'This is version 2 of the API'}

api.add_resource(MyResourceV1, '/v1/myresource')
api.add_resource(MyResourceV2, '/v2/myresource')

def get_api_version(request):
    version = request.headers.get('X-API-Version')
    if version == '1':
        return MyResourceV1
    elif version == '2':
        return MyResourceV2
    else:
        return None

@app.route('/myresource')
def myresource():
    resource_class = get_api_version(request)
    if resource_class:
        return resource_class().get()
    else:
        return {'message': 'Invalid API version'}