public virtual IModel GetMetadataModel([NotNull] ReverseEngineeringConfiguration configuration) { Check.NotNull(configuration, nameof(configuration)); var metadataModel = _factory.Create( configuration.ConnectionString, configuration.TableSelectionSet); if (metadataModel == null) { throw new InvalidOperationException( RelationalDesignStrings.ProviderReturnedNullModel( _factory.GetType().FullName)); } return(metadataModel); }