public class UniqueTypeList<T> :
    IList<T>,
    ICollection<T>,
    IEnumerable<T>,
    IEnumerable,
    IOfficeCollection<T>

Public Class UniqueTypeList(Of T)
    Implements IList(Of T),
               ICollection(Of T),
               IEnumerable(Of T),
               IEnumerable,
               IOfficeCollection(Of T)