REST API URLs in Java SDK

[alevadnaya]

I noticed that REST API URLs mentioned in Paypal documentation (https://developer.paypal.com/docs/business/develop/urls/) and the ones used in Java SDK are different.

From Paypal documentation
https://api-m.sandbox.paypal.com
https://api-m.paypal.com

From Java SDK
https://api.sandbox.paypal.com
https://api.paypal.com

Is this going to be a problem if we have both SDK calls and direct integration calls in our project? Should we use SDK URLs for direct calls as well?