QueryInput

 { 
 // Union field input 
can be only one of the following: 
 "audioConfig" 
 : 
 { 
 object (  InputAudioConfig 
 
) 
 } 
 , 
 "text" 
 : 
 { 
 object (  TextInput 
 
) 
 } 
 , 
 "event" 
 : 
 { 
 object (  EventInput 
 
) 
 } 
 , 
 "dtmf" 
 : 
 { 
 object (  TelephonyDtmfEvents 
 
) 
 } 
 // End of list of possible types for union field input 
. 
 }