This repository hosts the specification for Scene Layers which are containers for arbitrarily large amounts of geographic data. The delivery and persistence model for Scene Layers, referred to as Indexed 3d Scene Layer (I3S) and Scene Layer Package (SLPK) respectively, are specified.
In the description said: "Objects of this type extend vestedGeometryParams and use one texture and one material..."
But you have an attribute of textureID as array of numbers. Should it be just a single number?
Thanks