System 4.0.0.0 System.Collections.Generic.ICollection<T> System.Collections.Generic.IEnumerable<T> To be added. This interface provides methods for implementing sets, which are collections that have unique elements and specific operations. The and collections implement this interface. Provides the base interface for the abstraction of sets. Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Void To be added. To be added. To be added. Method 4.0.0.0 System.Void To be added. To be added. To be added. Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Void To be added. To be added. To be added. Method 4.0.0.0 System.Void To be added. To be added. To be added.