This can lead to undesired behavior when a class is added to a Collection

Example:

  class C1 {
      override fun equals(other: Any?) = true
  }

  class C2 {
      override fun hashCode() = 0
  }

  object O1 {
      override fun equals(other: Any?) = true
  }

  object O2 {
      override fun hashCode() = 0
  }

The quick-fix overrides equals() or hashCode() for classes and deletes these methods for objects:

   class C1 {
       override fun equals(other: Any?) = true
       override fun hashCode(): Int {
           return javaClass.hashCode()
       }
   }

   class C2 {
       override fun hashCode() = 0
       override fun equals(other: Any?): Boolean {
           if (this === other) return true
           if (javaClass != other?.javaClass) return false
           return true
       }
   }

   object O1 {
   }

   object O2 {
   }