src/vs/editor/common/services/modelService.ts/ModelService/getModels
class ModelService:	public getModels(): ITextModel[] {
		const ret: ITextModel[] = [];

		const keys = Object.keys(this._models);
		for (let i = 0, len = keys.length; i < len; i++) {
			const modelId = keys[i];
			ret.push(this._models[modelId].model);
		}

		return ret;
	}