Typescript Bindings Missing Entries

The Cesium.d.ts is missing references to DynamicGeometryUpdater. Is there any way around this?

And how do you use the Cesium.DataSourceDisplay.defaultVisualizersCallback() when the function is supposed to “set or get” in typescript?

Because they (Cesium Dev team) designed it as private, not public API.

The wonders of Javascript… The api exposes the method to return the GeometryUpdater api, then they provide isDynamic method that clearly refers to the DynamicGeometryUpdater. This seems like a major flaw of the api.