/// <summary>
/// Determines whether this collection contains all of the specified <paramref name="elements"/>.
/// </summary>
/// <typeparam name="TElement">The type of the elements in the collection.</typeparam>
/// <typeparam name="TEnumerator">The type of the enumerator for the collection.</typeparam>
/// <param name="collection">This collection.</param>
/// <param name="elements">The elements to attempt to find.</param>
/// <returns><see langword="true"/> if all of the <paramref name="elements"/> are contained in this collection; otherwise <see langword="false"/>.</returns>
public static Boolean ContainsAll <TElement, TEnumerator>(this IGetEnumerator <TElement, TEnumerator> collection, ReadOnlySpan <TElement> elements) where TEnumerator : notnull, ICurrent <TElement>, IMoveNext
{
foreach (TElement element in elements)
{
if (!collection.Contains(element))
{
return(false);
}
}
return(true);
}
