lack of clear usage examples

when I was writing code using the library, I didn't have enough examples to understand how it works.
I would like to add my own test as an example so that other developers can use it in the future. But since I'm a novice programmer, I'm not sure how cleanly my project is written.

Look for existing example directories or test files in the gqlgen repository to understand the project's structure and conventions. The issue author wants to add a usage example; identify where examples are typically placed (e.g., an `examples/` directory or within documentation). Review the library's documentation to see how examples are currently presented, then write a clear, minimal example demonstrating a common use case.

Written by the indexing model from the issue text.