//! MLS Chapter 7: Inheritance, Modification, and Redeclaration
//!
//! This module tests conformance to MLS 3.7-dev Chapter 7, which defines:
//! - §7.1 Inheritance – Extends Clause
//! - §7.2 Modifications
//! - §7.3 Redeclaration
//! - §7.4 Selective Model Extension
//!
//! Reference: https://specification.modelica.org/master/inheritance-modification-redeclaration.html