// Copyright (c) Mainflux
// SPDX-License-Identifier: Apache-2.0

// Package twins contains the domain concept definitions needed to support
// Mainflux twins service functionality. Twin is a semantic representation of a
// real world data system consisting of data producers and consumers. It stores
// the sequence of attribute based definitions of a data system and refers to a
// time series of definition based states that store the system historical data.
package twins