code: def clean_global_runtime_state(reset_subsystem=False):
    
    if reset_subsystem:
      # Reset subsystem state.
      Subsystem.reset()
  
    # Reset Goals and Tasks.
    Goal.clear()
  
    # Reset global plugin state.
    BuildConfigInitializer.reset()
docs: Resets the global runtime state of a pants runtime for cleaner forking.
  
    :param bool reset_subsystem: Whether or not to clean Subsystem global state.