topK property
      
      int?
      get
      topK
      
    
    
Limits the number of top candidates considered during sampling.
Implementation
int? get topK => _topK;
      
      set
      topK
      (int? value) 
      
    
    
    
Implementation
set topK(int? value) {
  _topK = value;
  notifyListeners();
}