old_contents: 
  from .lattice import default_optics_mode
  from .lattice import energy
  
  from .accelerator import default_vchamber_on
  from .accelerator import default_radiation_on
  from .accelerator import accelerator_data
  from .accelerator import create_accelerator
  
  from .families import get_family_data
  from .families import family_mapping
  from .families import get_section_name_mapping
  
  # -- default accelerator values for TS_V04_01--
  lattice_version = accelerator_data['lattice_version']
  
new_contents: 
  from .lattice import default_optics_mode
  from .lattice import energy
  
  from .accelerator import default_vchamber_on
  from .accelerator import default_radiation_on
  from .accelerator import accelerator_data
  from .accelerator import create_accelerator
  
  from .families import get_family_data
  from .families import family_mapping
  from .families import get_section_name_mapping
  
  from .control_system import get_control_system_data
  
  # -- default accelerator values for TS_V04_01--
  lattice_version = accelerator_data['lattice_version']
  
subject: Add control system data to init.