utterance property
      
      SpeechSynthesisUtterance
      get
      utterance
      
    
    
    
Implementation
external SpeechSynthesisUtterance get utterance;
      
      set
      utterance
      (SpeechSynthesisUtterance value) 
      
    
    
    
Implementation
external set utterance(SpeechSynthesisUtterance value);