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    Update typing: Union[...]
    
 
    

    



 
    
 
    

  Review Request #15057
  —
  Created May 14, 2026 and updated 

 
    


    




    




    






 
    
  
    
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  david
 
    

    





    
 
 
    
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    This change updates legacy type hints that use the old Union[...] form
    
to use modern union notation instead.
    

    This is the last of the conversion changes for old type syntax. There
    
will be one more change after this for fixing up other imports.
    
 
    

    





  

    
 
 
    
  
    Ran unit tests.
    
 
    

    




 
    

    





    
 
    




  
    
 
 
    
  


    
 
    
  
   
    

    Summary
    ID

   
    
      
  

   
    

    

     
    
      Update typing: Union[...]
      
    This change updates legacy type hints that use the old `Union[...]` form
to use modern union notation instead.

This is the last of the conversion changes for old type syntax. There
will be one more change after this for fixing up other imports.

Testing Done:
Ran unit tests.
    
     
    

        		
    nqkpxppwzrqtxkmyulwtskmlwyllornx

   
    


      
 
    

    
    
 
    

    






 









 
    

    



  
    
 
    

    


    












    
 




 
    
  
    

   
    

   
    

    
    

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