public static bool Exists <TDocument, TContent>(this ILookupInResult <TDocument> result, Expression <Func <TDocument, TContent> > path)
{
// ReSharper disable ConditionIsAlwaysTrueOrFalse
if (result == null)
{
ThrowHelper.ThrowArgumentNullException(nameof(result));
}
if (path == null)
{
ThrowHelper.ThrowArgumentNullException(nameof(path));
}
// ReSharper restore ConditionIsAlwaysTrueOrFalse
var pathString = SubDocumentPathExpressionVisitor.GetPath(result, path);
var index = result.IndexOf(pathString);
if (index < 0)
{
ThrowHelper.ThrowArgumentException(nameof(path), $"Path '{pathString}' is not found.");
}
return(result.Exists(index));
}
public bool Exists(int index) => _inner.Exists(index);