private IEdmModel GetModel() { HttpConfiguration configuration = Request.GetConfiguration(); if (configuration == null) { throw Error.InvalidOperation(SRResources.RequestMustContainConfiguration); } MediaTypeFormatter firstODataFormatter = configuration.Formatters.Where( f => f != null && f.IsODataFormatter()).FirstOrDefault(); if (firstODataFormatter == null) { throw Error.InvalidOperation(SRResources.NoODataFormatterForMetadata); } IEdmModel model = firstODataFormatter.GetODataModel(); Contract.Assert(model != null); model.SetEdmxVersion(_defaultEdmxVersion); model.SetDataServiceVersion(_defaultDataServiceVersion); return(model); }