Can you explain the mechanism of reference counting and memory management using Retain Count?

The Retain Count mechanism is a memory management method in iOS, where each object has a reference count. When a new reference to an object is created, the count increases (retain), and when a reference is removed, it decreases (release). When the count reaches zero, the object is removed from memory.

Example:

let obj = NSObject() // Retain count = 1
let anotherRef = obj  // Retain count = 2
// When anotherRef is no longer used, the Retain count decreases

This mechanism helps automatically manage the lifetime of objects without explicit memory deallocation.