/// <summary>
        /// Checks if the new name of the attribute already exists
        /// </summary>
        /// <param name="myNewAttributeName"></param>
        /// <param name="vertexType"></param>
        /// <returns></returns>
        private static bool CheckNewName(string myNewAttributeName, IVertexType vertexType)
        {
            if (myNewAttributeName != null)
            {
                return vertexType.GetKinsmenVertexTypesAndSelf()
                    .Select(aVertexType => aVertexType.GetAttributeDefinitions(false).ToArray())
                    .All(attributesOfCurrentVertexType => !attributesOfCurrentVertexType.Any(_ => _.Name == myNewAttributeName));
            }

            return true;
        }