//! Demonstrates map-style invocation with prefix and postfix token injection.
//!
//! This example shows the powerful map-style syntax using `@Prefix`, `@Postfix`,
//! and `@Each` keywords to inject tokens before and after each element.
//!
//! The macro automatically unwraps braces and composes the final expression for
//! each element, enabling complex token tree transformations.
use for_each;