public when_deriving_the_table_definition_from_the_database_schema_Tests()
        {
            ConnectionSource.CleanBasicDocuments();
            _schema = _container.GetInstance <DocumentSchema>();

            theMapping = _schema.MappingFor(typeof(User)).As <DocumentMapping>();
            theMapping.DuplicateField("UserName");


            _storage = _schema.StorageFor(typeof(User));

            theDerivedTable = _schema.TableSchema(theMapping.TableName);
        }