I have a document type called Project that has various string-valued properties, and a property called ExtraPictures with a Media Picker editor. In templates, the Project model duly exposes all of the string properties, but not ExtraPictures, though it is there in models.generated.cs:

/// Extra pictures /// [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Umbraco.ModelsBuilder", "8.0.1")] [ImplementPropertyType("extraPictures")] public IEnumerable ExtraPictures => this.Value<>>("extraPictures");

In templates based on Project itself, I can get to the values with .Value("extraPictures"), but when on a parent object with Project children, that fails as well. I am new to Umbraco development, so must be overlooking something very obvious?