Setter is considered to be redundant in one of the following cases:

1. Setter has no body. Accessor visibility isn't changed, declaration isn't 'external' and has no annotations.

   
       var myPropA: Int = 0
           private set // it's ok - property visibility is changed to private
   
       var myPropB: Int = 0
           external set // it's ok - implemented not in Kotlin (external)
   
       var myPropC: Int = 0
           @Inject set // it's ok - accessor is annotated
   
   
       var myPropWithRedundantSetter: Int = 0
           set // redundant
           

2. Setter body is a block with a single statement assigning parameter to the backing field.

   
       var prop: Int = 0
           set(value) { // redundant
               field = value
           }