setKTX2Loader( ktx2Loader ) {

		this.ktx2Loader = ktx2Loader;
		return this;

	}
Sets the given KTX2 loader to this loader. Required for loading KTX2
compressed textures.

@param {KTX2Loader} ktx2Loader - The KTX2 loader to set.
@return {GLTFLoader} A reference to this loader.