Mapping an object that implements IEnumerable T

[chriswalpen]

public class EnumerableNode : IEnumerable<SimpleNode>
{
    private List<SimpleNode> _nodes = new List<SimpleNode>();
    public void Add(SimpleNode node)
    {
        _nodes.Add(node);
    }
    public IEnumerator<SimpleNode> GetEnumerator()
    {
        return _nodes.GetEnumerator();
    }
    IEnumerator IEnumerable.GetEnumerator()
    {
        return GetEnumerator();
    }
}

public class SimpleNode
{
    public string Name { get; set; }

    public int Value { get; set; }
}

var reader = new YamlReader();
var data = reader.Read<EnumerableNode>(lines);

This can't be mapped because the EnumerableNode is not a list. The Errormessage is not very clear on why this can't be made