CompositeNDP                                                                                                     
│    provides   fleet_composition   SB(≥0) │ requires   num_operators   SB(≥0::1)                                
│                                          │ requires   capital_cost    SB(≥0) $                                 
│  3 nodes, 0 edges                                                                                              
│   connected rec: ✓                                                                                             
│  no connections                                                                                                
│  Unconnected func:                                                                                             
│   {CFunction(dp='_res_capital_cost', s='capital_cost'), CFunction(dp='_res_num_operators', s='num_operators')} 
│  Unconnected res:                                                                                              
│   {CResource(dp='_fun_fleet_composition', s='fleet_composition')}