UnityEditor.TerrainDetailContextMenus.AddDetailMesh C# (CSharp) Method

        internal static void AddDetailMesh(MenuCommand item)
        {
            DetailMeshWizard wizard = TerrainWizard.DisplayTerrainWizard<DetailMeshWizard>("Add Detail Mesh", "Add");
            wizard.m_Detail = null;
            wizard.InitializeDefaults((Terrain) item.context, -1);
        }