how can I use my swagger API spec in apigee?,how can I use my swagger api spec in apigee for testing my api?

[talhasiddique10]

I am using swagger API 3.0 for documenting my REST API for firestore database. I wanted to use apigee as a middleware for security purpose. I wanted to use my swagger API spec 3.0 in apigee for testing and for the purpose of applying security on my spec using apigee, how can I do this ? kindly guide me. Thanks in advance!