Inheritance: AbstractTreeNode
        private void AddReferences(IntellisenseDeclarations declarations, ProjectTreeNode project)
        {
            var namespaces = new List<IBooParseTreeNode>();

            foreach (var ns in project.ReferencedNamespaces.Keys)
            {
                namespaces.Add(project.ReferencedNamespaces[ns]);
            }

            declarations.AddRange(namespaces);
        }