getGeometryRangeAt( geometryId, target = {} ) {

		this.validateGeometryId( geometryId );

		const geometryInfo = this._geometryInfo[ geometryId ];
		target.vertexStart = geometryInfo.vertexStart;
		target.vertexCount = geometryInfo.vertexCount;
		target.reservedVertexCount = geometryInfo.reservedVertexCount;

		target.indexStart = geometryInfo.indexStart;
		target.indexCount = geometryInfo.indexCount;
		target.reservedIndexCount = geometryInfo.reservedIndexCount;

		target.start = geometryInfo.start;
		target.count = geometryInfo.count;

		return target;

	}
Get the range representing the subset of triangles related to the attached geometry,
indicating the starting offset and count, or `null` if invalid.

@param {number} geometryId - The id of the geometry to get the range of.
@param {Object} [target] - The target object that is used to store the method's result.
@return {{
	vertexStart:number,vertexCount:number,reservedVertexCount:number,
	indexStart:number,indexCount:number,reservedIndexCount:number,
	start:number,count:number
}} The result object with range data.