LazyAddressTokenReplacer.cs

class AddressTokenReplacer
{
  private IAddressRepository _addressRepository;
  public AddressTokenReplacer(IAddressRepository addressRepository)
  {
    _addressRepository = addressRepository;
  }
 
  public string Apply(string toHaveTokensReplaced, string token, int aggregateId)
  {
    var address = Lazy(x => addressRepository.Load(aggreagetId));
    switch(token){
      case "Street":
        toHaveTokensReplaced.Replace("$" + token, address.Value.Street; 
        break;
      case "PostalCode":
        toHaveTokensReplaced.Replace("$" + token, address.Value.PostalCode; 
        break;
      case "City":
        toHaveTokensReplaced.Replace("$" + token, address.Value.City; 
        break;
    }
    return toHaveTokensReplaced;
  }
}