Kotlin Companion Object

snippet.kt

class Person private constructor(val name: String, val age: Int) {
  
  companion object Factory {
    fun create(name: String, age: Int) = Person(name, age)
  }
}

// members of the companion object can be called using the class name as qualifier
val bob = Person.create("Bob", 21)

// the name of the class acts as a reference to the companion object
val factory = Person 
// equivalent to:
val factory = Person.Factory