public static Task <bool> AnyAsyncLinqToDB <TSource>(
this IQueryable <TSource> source,
Expression <Func <TSource, bool> > predicate,
CancellationToken token = default)
=> AsyncExtensions.AnyAsync(source.ToLinqToDB(), predicate, token);
/// <summary>
/// Determines whether any element of a sequence satisfies a condition
/// </summary>
/// <typeparam name="TSource">The type of the elements of source</typeparam>
/// <param name="source">A sequence whose elements to test for a condition</param>
/// <param name="predicate">A function to test each element for a condition</param>
/// <returns>
/// true if any elements in the source sequence pass the test in the specified predicate;
/// otherwise, false
/// </returns>
public static Task <bool> AnyAsync <TSource>(this IQueryable <TSource> source, Expression <Func <TSource, bool> > predicate = null)
{
return(predicate == null?AsyncExtensions.AnyAsync(source) : AsyncExtensions.AnyAsync(source, predicate));
}