isRejected
Observable property typically for use in templates to indicate to the user if lazy loading has failed.
    ref.isRejected
  
  
  
  
  Returns
 {boolean}: 
true if the lazy loading promise was rejected.
Observable property typically for use in templates to indicate to the user if lazy loading has failed.
ref.isRejected
   {boolean}: 
true if the lazy loading promise was rejected.