[C#] if statement HELP!

Hi there, i'm wondering how to switch between this 3 files using if/else statement and GetButtonDown...

I would like to use "ExampleGeometryProvider" as the main one, and then swtich to "ExampleGeometryProviderCC" or "ExampleGeometryProviderSS" by pressing a key note as "Fire 1" and "Fire2...

if anyone can give a hint I'll be very grateful

here is the code:

 GeometryProviderBase gp;
     ConnectomeModel currentModel ;
     
     void Awake()
     {
         
         //gp = gameObject.AddComponent("ExampleGeometryProvider") as ExampleGeometryProvider; // Conexiones, esferas y cubos
         
         //gp = gameObject.AddComponent("ExampleGeometryProviderCC") as ExampleGeometryProviderCC; // Solo Conexiones
         
         gp = gameObject.AddComponent("ExampleGeometryProviderSS") as ExampleGeometryProviderSS; // Solo esferas y cubos
         
         
         Debug.Log("Building atlas"); 
         
         //StartCoroutine(BuildAtlas());    
         XmlReaderSettings reader_settings = new XmlReaderSettings();
         reader_settings.IgnoreWhitespace = true;
         XmlSerializer serializer = new XmlSerializer(typeof(atlas));
         XmlReader reader = XmlReader.Create(connectome_atlas_path, reader_settings);
         reader.MoveToContent();
         ConnectomeModel.CurrentAtlas = (atlas)serializer.Deserialize(reader);
         reader.Close();    
     
     }
     
     void Start () 
     {
         Debug.Log("Parsing model");
         currentModel = ConnectomeParser.Parse (connectome_file_path, ConnectomeParser.ReportDetail.DETAIL);
             
         Debug.Log("Instantiating geometry");
 
         gp.load(currentModel);
         gp.instantiate ();
     }
 }

thanks in advance