GameObjectPool Class

public class GameObjectPool : PoolBase<GameObject, GameObject, GameObjectPoolSettings>, 
	IGameObjectPoolSettings, ISharedPoolSettings<GameObject>, ISharedPoolSettings

// Create the pool as a component on a game object.
var pool = gameObject.AddComponent<GameObjectPool>();

// Set up the pool's properties.
pool.SourceObject = prefab;
pool.InitialSize = 50;
pool.MaximumSize = 200;
pool.InstantiateWhenEmpty = true;
pool.NotificationMode = NotificationMode.Interface;
pool.LogMessages = LogLevel.Warning;

// Initialise the pool. It will contain 50 objects.
pool.Initialise();

// Acquire one of the 50 objects from the pool. The Acquire method can be used safely if InstantiateWhenEmpty is true, or if a check is made to CanAcquire beforehand.
GameObject instance = pool.Acquire();

// Acquire one of the 49 remaining objects from the pool. TryAcquire can be used safely even when InstantiateWhenEmpty is false.
GameObject secondInstance;
if (pool.TryAcquire(out secondInstance)) {
    // Release the object back to the pool. It now contains 49 objects again.
    pool.Release(secondInstance);
}

// Release the object back to the pool. It now contains 50 objects.
pool.Release(instance);