Test: init_order.cpp
init_order.cpp: In constructor 'CoordinateSystem::CoordinateSystem(const std::string&)':
init_order.cpp:26:22: error: 'get_current_units' was not declared in this scope
   26 |                   << get_current_units().get_name() << std::endl;
      |                      ^~~~~~~~~~~~~~~~~
init_order.cpp: In function 'int main()':
init_order.cpp:56:49: error: 'current_units' was not declared in this scope; did you mean 'get_current_units'?
   56 |     std::cout << "Main: Current units are: " << current_units.get_name() << std::endl;
      |                                                 ^~~~~~~~~~~~~
      |                                                 get_current_units