TargetReference

 { 
 "teamDrive" 
 : 
 { 
 object (  TeamDriveReference 
 
) 
 } 
 , 
 // Union field object 
can be only one of the following: 
 "driveItem" 
 : 
 { 
 object (  DriveItemReference 
 
) 
 } 
 , 
 "drive" 
 : 
 { 
 object (  DriveReference 
 
) 
 } 
 // End of list of possible types for union field object 
. 
 }