DynamoVisualProgramming.DynamoServices by Autodesk

<PackageReference Include="DynamoVisualProgramming.DynamoServices" Version="2.0.0-beta2506" />

 IsVisibleInDynamoLibraryAttribute

This attribute is used to specify whether the item will be displayed in the library.
using System; namespace Autodesk.DesignScript.Runtime { [AttributeUsage(AttributeTargets.All, AllowMultiple = false)] public sealed class IsVisibleInDynamoLibraryAttribute : Attribute { public bool Visible { get; set; } public IsVisibleInDynamoLibraryAttribute(bool visible) { Visible = visible; } } }