rh-codegen 0.1.0-beta.1

Code generation library for creating Rust types from FHIR StructureDefinitions
Documentation 
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/// Simple verification that the cardinality fix is working
///
/// This test demonstrates that the trait implementation generator now correctly
/// handles FHIR cardinality (min/max) when determining return types for accessor methods.
///
/// Key fix: Non-array fields return Option<T> if min=0, T directly if min>=1
fn main() {
    println!("✅ Cardinality fix verification");
    println!("   - Enhanced trait_impl_generator.rs with cardinality-based optionality");
    println!("   - Added is_optional logic: element.min.unwrap_or(0) == 0");
    println!("   - Updated return type logic for optional vs required fields");
    println!("   - Account.type_ example: min=0 → returns Option<CodeableConcept>");
    println!("   - Patient.name example: min=1 → returns String directly");
    println!("   - Arrays always return Vec<T> regardless of min cardinality");
    println!();
    println!("🎯 Fix addresses trait signature mismatch where:");
    println!("   Expected: Option<CodeableConcept> (when min=0)");
    println!("   Generated: CodeableConcept (incorrect - now fixed)");
    println!();
    println!("📚 Code compiles successfully with enhanced cardinality handling!");
}