code: function InstancedPrefabBufferGeometry(prefab, count) {
    if (prefab.isGeometry === true) {
      console.error('InstancedPrefabBufferGeometry prefab must be a BufferGeometry.');
    }
  
    InstancedBufferGeometry.call(this);
  
    this.prefabGeometry = prefab;
    this.copy(prefab);
  
    this.maxInstancedCount = count;
    this.prefabCount = count;
  }
docs: A wrapper around THREE.InstancedBufferGeometry, which is more memory efficient than PrefabBufferGeometry, but requires the ANGLE_instanced_arrays extension.
  
  @param {BufferGeometry} prefab The Geometry instance to repeat.
  @param {Number} count The number of times to repeat the geometry.
  
  @constructor