PlantUML source code:

@startuml
package System.Collections.Concurrent
{
 interface IProducerConsumerCollection<T>
 {
 CopyTo(T[] array, int index)
 ToArray()
 TryAdd(T item)
 TryTake(out T item)
 }
 class ConcurrentBag<T> implements IProducerConsumerCollection
 {
 +Count
 +IsEmpty
 __ Methods __
 ...
 }
 class ConcurrentDictionary<TKey, TValue>
 {
 +Dictionary
 +Item[]
 __ Methods __
 ...
 }
 class ConcurrentStack<T> implements IProducerConsumerCollection
 {
 +Count
 +IsEmpty
 __ Methods __
 ...
 }
 class ConcurrentQueue<T> implements IProducerConsumerCollection
 {
 +Count
 +IsEmpty
 __ Methods __
 ...
 }
 
 class BlockingCollection<T>
 {
 +BoundedCapacity
 +Count
 +IsAddingCompleted
 +IsCompleted
 __ Methods __
 ...
 }
}
@enduml