code: def main():
      """Main function."""
      # First Specify all parameters
      domain_vars = [
          {"type": "int", "min": 224, "max": 324, "dim": 1},
          {"type": "float", "min": 0, "max": 10, "dim": 2},
          {"type": "float", "min": 0, "max": 1, "dim": 1},
          {"type": "int", "min": 0, "max": 92, "dim": 2},
      ]
      fidel_vars = [
          {"type": "float", "min": 1234.9, "max": 9467.18, "dim": 2},
          {"type": "discrete", "items": ["a", "bc", "def", "ghij"]},
          {"type": "int", "min": 123, "max": 234, "dim": 1},
      ]
      fidel_to_opt = [[9467.18, 9452.8], "def", [234]]
      # Budget of evaluations
      max_num_evals = (
          100  # Optimisation budget (max number of evaluations)
      )
      max_mf_capital = max_num_evals * mf_cost(
          fidel_to_opt
      )  # Multi-fideltiy capital
  
      # First do the MF version
      config_params = {
          "domain": domain_vars,
          "fidel_space": fidel_vars,
          "fidel_to_opt": fidel_to_opt,
      }
      config = load_config(config_params)
      opt_method = "bo"
      #   opt_method = 'rand'
      # Optimise
      mf_opt_val, mf_opt_pt, history = maximise_multifidelity_function(
          mf_objective,
          config.fidel_space,
          config.domain,
          config.fidel_to_opt,
          mf_cost,
          max_mf_capital,
          config=config,
          opt_method=opt_method,
      )
      print(mf_opt_pt, mf_opt_val)
  
      # Non-MF version
      config_params = {"domain": domain_vars}
      config = load_config(config_params)
      max_capital = (
          100  # Optimisation budget (max number of evaluations)
      )
      # Optimise
      opt_val, opt_pt, history = maximise_function(
          objective,
          config.domain,
          max_num_evals,
          config=config,
          opt_method=opt_method,
      )
      print(opt_pt, opt_val)
  
imports: from dragonfly import load_config, maximise_function, maximise_multifidelity_function
  from hartmann6_4 import objective
  from hartmann6_4_mf import objective
  from hartmann6_4_mf import cost
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types