yes. Absolutely. This is the number one rule of writing APIs.
If you use an api of any kind, from open-source code API's, to proprietary black box HTTP api's -- you can _definitely_ tell when the api developers have a strong understanding of the use cases, and when they don't. The best way to get a strong understanding of the use cases is to write a client.
If you use an api of any kind, from open-source code API's, to proprietary black box HTTP api's -- you can _definitely_ tell when the api developers have a strong understanding of the use cases, and when they don't. The best way to get a strong understanding of the use cases is to write a client.
This is what "dog fooding" means.