<!-- PCU: ch11-formats | contract: contracts/apr-book-ch11-v1.yaml -->
<!-- Example: cargo run -p aprender-core --example ch11_formats -->
<!-- Status: enforced -->
# Chapter 11: Model Formats and Conversion
> Contract: [`apr-book-ch11`](../../../contracts/apr-book-ch11-v1.yaml)
Run: `cargo run -p aprender-core --example ch11_formats`
```rust,ignore
{{#include ../../../crates/aprender-core/examples/ch11_formats.rs}}
```