PIbd-31_Putincev.D.M._COP_29/COP/PutincevLibrary/Exceptions/TreeHierarchyNotSetException.cs

namespace PutincevLibrary.Exceptions
{
    public class TreeHierarchyNotSetException : UserControlTreeViewException
    {
        public TreeHierarchyNotSetException() : base("Tree hierarchy not set") { }
    }
}