/// <summary>
/// Returns a <see cref="System.Collections.Generic.List{String}"/> of the current block attribute values for the specified key. If the key is not
/// found an empty list will be returned.
/// </summary>
/// <param name="key">A <see cref="System.String"/> representing the block attribute key</param>
/// <returns>A <see cref="System.Collections.Generic.List{String}"/> containing the current attribute values for the specified key. If the key is not
/// found, an empty list will be returned.</returns>
public List <string> GetAttributeValues(string key)
{
if (_blockCache != null)
{
return(_blockCache.GetAttributeValues(key));
}
return(new List <string>());
}